Catalysts for NO oxidation, hydrocarbon oxidation, NH3 oxidation, and selective catalytic reduction of NOx

Abstract

This invention relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising: a flow-through substrate including an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate; a first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; a second coating comprising a first platinum group metal component supported on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; optional The third coating comprises a second platinum group metal component loaded on the second oxide material; wherein the third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100; wherein the second coating extends at y% of the axial length of the substrate from the inlet end to the outlet end and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, where y is 95-100; wherein the first coating extends at x% of the axial length of the substrate from the outlet end to the inlet end and is disposed on the second coating, where x is 20 to y.

Description

[0001] This invention relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising a first coating and a second coating. The invention also relates to an exhaust gas treatment system incorporating the catalyst for treating exhaust gas leaving a diesel engine, and a method for preparing the catalyst. Furthermore, the invention relates to the use of the aforementioned catalyst and methods for simultaneously and selectively catalytically reducing NOx, oxidizing ammonia, oxidizing nitric oxide, and oxidizing hydrocarbons using the catalyst.

[0002] Currently, many OEMs are focusing on increasing engine NOx emissions, a side effect of their attempts to reduce CO2 emissions and simultaneously improve fuel economy due to impending regulations. These higher engine NOx emissions can be too much of a burden for standard EU VI / EPA 13 systems while maintaining emissions regulations. Therefore, new layouts are needed to meet the new, stringent regulations. Closely coupled catalysts for selective catalytic reduction (SCR) are one such possible new layout, which can help increase the burden of NOx reduction, especially at high engine NOx emissions. However, for any new aftertreatment system, a closed diesel particulate filter is still required. The soot collected in the filter must be converted into gaseous substances (typically CO2) through appropriate methods to prevent filter clogging. Therefore, diesel oxidation catalysts (DOCs) are typically installed upstream of filters containing relatively high levels of expensive platinum group metals (PGMs). The DOC is used to catalytically combust diesel fuel. This generates the temperature at which filter regeneration begins, or is accelerated and becomes more efficient. However, during the intervals when no fuel is injected to generate temperature on the catalytic soot filter (CSF), NO2 is typically used as an oxidant to oxidize the soot on the CSF.

[0003] During testing on an engine, the vanadium-SCR catalyst was found to exhibit relatively good properties in the catalytic combustion of diesel fuel, as disclosed in WO2015 / 189680A1. This alternative can be used for both fuel combustion DOC and upstream SCR. Furthermore, this method can be combined with the deNOx activity of the material by reacting NOx emitted from the engine with ammonia on this component. However, a major drawback of this method is the loss of NO2 generation upstream of the filter used for passive soot regeneration, and the potential for increased selectivity for N2O. Therefore, there is a need to provide catalysts that can meet imminent regulations, particularly by reducing nitrous oxide formation.

[0004] US2016 / 0367973 discloses a catalyst article having a first region comprising a first SCR catalyst and a second region comprising an ammonia leakage catalyst, while US2016 / 0367974 discloses a catalyst article having an ammonia leakage catalyst and a second catalyst such as a diesel oxidation catalyst, a selective catalytic reduction / passive NOx adsorbent, or a ternary conversion catalyst. However, the catalysts described in US2016 / 0367973 are not optimized for NO oxidation to increase the NO2 fraction of the exhaust gas entering the CSF. Furthermore, when SCR and oxidation functions are combined, the catalyst can produce high N2O levels through non-selective DeNOx. For example, the diesel oxidation catalyst, selective catalytic reduction / passive NOx adsorbent, or ternary conversion catalyst described in US2016 / 0367974 will also result in high N2O selectivity due to the non-selective oxidation of NH3 (which can escape from the upstream SCR).

[0005] Therefore, the object of the present invention is to provide catalysts for the selective catalytic reduction of NO, ammonia, HC, and NOx, exhibiting high catalytic activity (NH3 oxidation, NO oxidation, HC oxidation, and NOx conversion) while reducing nitrous oxide (N2O) formation. Surprisingly, the catalysts of the present invention for the selective catalytic reduction of NO, ammonia, HC, and NOx allow for high catalytic activity (NH3 oxidation, NO oxidation, HC oxidation, and NOx conversion) while reducing nitrous oxide (N2O) formation.

[0006] I. First catalyst for NO oxidation, ammonia oxidation, HC oxidation, and selective catalytic reduction of NOx.

[0007] Therefore, the present invention relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0008] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0009] (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0010] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0011] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0012] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0013] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, wherein y is 95-100.

[0014] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0015] Preferably, x is y. Alternatively, x is preferably 20-60, more preferably 40-60, even more preferably 45-55, and even more preferably 48-52.

[0016] Preferably, y is 95-100, more preferably 98-100, even more preferably 99-100, and x is y. Or preferably, y is 95-100, more preferably 98-100, even more preferably 99-100, and x is 20-60, more preferably 40-60, even more preferably 45-55, even more preferably 48-52.

[0017] Preferably z is 0-65, more preferably 0-60, even more preferably 0-55, or z is 80-100, more preferably 95-100, even more preferably 98-100.

[0018] Preferably, the first coating comprises a zeolite material containing one or more of copper and iron.

[0019] Preferably, the zeolite material contained in the first coating has a skeleton type selected from the group: ABW, ACO, AEI, AEL, AEN, AET, AFG, AFI, AFN, AFO, AFR, AFS, AFT, AFV, AFX, AFY, AHT, ANA, APC, APD, AST, ASV, ATN, ATO , ATS, ATT, ATV, AVL, AWO, AWW, BCT, BEA, BEC, BIK, BOF, BOG, BOZ, BPH, BRE, BSV, CAN, CAS, CDO, CFI, CGF, CGS, CHA, -CHI, -CLO, CON, CSV, CZP, DAC, DDR, DF O, DFT, DOH, DON, EAB, EDI, EEI, EMT, EON, EPI, ERI, ESV, ETR, EUO, *-EWT, EZT, FAR, FAU, FER, FRA, GIS, GIU, GME, GON, GOO, HEU, IFO, IFR, -IFU, IFW, IFY , IHW, IMF, IRN, IRR, -IRY, ISV, ITE, ITG, ITH, *-ITN, ITR, ITT, -ITV, ITW, IWR, IWS, IWV, IWW, JBW, JNT, JOZ, JRY, JSN, JSR, JST, JSW, KFI, LAU, LEV, LIO, -LIT, LOS, LOV, LTA, LTF, LTJ, LTL, LTN, MAR, MAZ, MEI, MEL, MEP, MER, MFI, MFS, MON, MOR, MOZ, *MRE, MSE, MSO, MTF, MTN, MTT, MTW, MVY, MWF, MWW, NAB, NA T, NES, NON, NPO, NPT, NSI, OBW, OFF, OKO, OSI, OSO, OWE, -PAR, PAU, PCR, PHI, PON, POS, PSI, PUN, RHO, -RON, RRO, RSN, RTE, RTH, RUT, RWR, RWY, SAF, SAO, S AS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SFF, SFG, SFH, SFN, SFO, SFS, *SFV, SFW, SGT, SIV, SOD, SOF, SOS, SSF, *-SSO, SSY, STF, STI, *STO, STT, STW, -S VR, SVV, SZR, TER, THO, TOL, TON, TSC, TUN, UEI, UFI, UOS, UOV, UOZ, USI, UTL, UWY, VET, VFI, VNI, VSV, WEI, -WEN, YUG, ZON, mixtures of two or more species, and mixtures of two or more species.More preferably, the zeolite material is selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR, or a mixture of two or more of these, or a mixture thereof. More preferably, the zeolite material is selected from AEI, CHA, and BEA, or a mixture of two or more of these, or a mixture thereof. The zeolite material contained in the first coating more preferably has a framework type of CHA or AEI, more preferably CHA.

[0020] The zeolite material preferably comprises 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, with a framework structure consisting of one or more of Si, Al, O, and optionally H and P. In the framework structure, the molar ratio of Si to Al, in terms of the SiO2:Al2O3 molar ratio, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or even more preferably 30:1 to 40:1.

[0021] Preferably, the zeolite material contained in the first coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the first coating, calculated as Fe2O3, is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0022] Furthermore, in the context of this invention, it is conceivable that, in addition to Cu-containing zeolite materials, preferably Cu-CHA, there is also a certain amount of H-type zeolite materials, preferably zeolite materials with a framework type CHA.

[0023] Preferably, the zeolite material contained in the first coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is more preferably 0.1-10.0% by weight, more preferably 1.0-7.0% by weight, more preferably 2.5-5.5% by weight, based on the total weight of the zeolite material, and more preferably 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight. The skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0024] Preferably, in the catalyst, the first coating is at a concentration of 30.51-183.07 g / L (0.5-3 g / L). 3 More preferably 45.77-122.05 g / l (0.75-2 g / in) 3 More preferably 48.82-97.64 g / l (0.8-1.6 g / in) 3 More preferably 48.82-67.13 g / l (0.8-1.1 g / in) 3 ) or more preferably 73.23-97.64 g / l (1.2-1.6 g / in) 3 The loading includes zeolite materials.

[0025] In the context of this invention, the zeolite material contained in the first coating is preferred, more preferably a zeolite material having a framework type CHA, having an average crystallite size of at least 0.5 micrometers, preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and even more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0026] Preferably, the first coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, aluminum oxide, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably comprises one or more of aluminum oxide and zirconium oxide, and more preferably comprises zirconium oxide.

[0027] Preferably, in the catalyst, the first coating is applied at a concentration of 0.61-12.20 g / L (0.01-0.2 g / L). 3 More preferably 1.22-9.15 g / l (0.02-0.15 g / in). 3 More preferably 3.66-7.32 g / l (0.06-0.12 g / in).3 The loading includes metal oxide binders.

[0028] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, the first coating consists of a zeolite material comprising one or more of copper and iron and preferably, a metal oxide binder as described above.

[0029] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0030] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0031] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a skeleton type selected from AEI, CHA, BEA, a mixture of two or more of them and a mixture of two or more of them, wherein the zeolite material contained in the first coating more preferably has a skeleton type of CHA or AEI, more preferably CHA.

[0032] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0033] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0034] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0035] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, wherein y is 95-100.

[0036] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0037] In the context of this invention, it may also be preferred that the first coating comprises vanadium oxide, more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron, and antimony. More preferably, the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon, and zirconium, more preferably one or more of titanium and silicon, wherein more preferably, the oxide material is one or more of titanium dioxide and silicon dioxide, more preferably titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0038] Preferably, in the catalyst, the first coating is at a concentration of 30.51-244.09 g / L (0.5-4 g / L). 3 More preferably 61.02-183.07 g / l (1-3 g / in) 3 More preferably 91.53-152.56 g / l (1.5-2.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0039] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the second coating is composed of vanadium oxide.

[0040] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0041] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0042] (ii) A first coating comprising vanadium oxide, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron and antimony;

[0043] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0044] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0045] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0046] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, wherein y is 95-100.

[0047] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0048] In the context of this invention, preferably 0-0.0001% by weight, more preferably 0-0.00001% by weight, of the first coating is composed of palladium, more preferably of palladium, platinum and rhodium, and even more preferably of palladium, platinum, rhodium, osmium and iridium.

[0049] Preferably, the first platinum group metal component contained in the second coating is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, and even more preferably, the first platinum group metal component is platinum, or the first platinum group metal is palladium and platinum.

[0050] Preferably, the non-zeolite first oxide material on which the first platinum group metal component contained in the second coating is loaded comprises, more preferably, the following substances: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more of a mixed oxide containing two or more of Al, Zr, Ti, Si and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide.

[0051] More preferably, 90-100% by weight, more preferably 95-100% by weight, and more preferably 99-100% by weight of the non-zeolite first oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, more preferably 70-90% by weight, and more preferably 75-85% by weight of the non-zeolite first oxide material is composed of alumina, and 0-40% by weight, more preferably 10-30% by weight, and more preferably 15-25% by weight of the non-zeolite first oxide material is composed of zirconium oxide. Alternatively, more preferably, 90-100% by weight, more preferably 95-100% by weight, and more preferably 99-100% by weight of the non-zeolite first oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, more preferably 80-100% by weight, and more preferably 85-95% by weight of the non-zeolite first oxide material is composed of titanium dioxide, and 0-40% by weight, more preferably 0-20% by weight, and more preferably 5-15% by weight of the non-zeolite first oxide material is composed of silicon dioxide.

[0052] Preferably, the second coating comprises a zeolite material containing one or more of copper and iron.

[0053] Preferably, the zeolite material contained in the second coating has a skeleton type selected from the following group: ABW, ACO, AEI, AEL, AEN, AET, AFG, AFI, AFN, AFO, AFR, AFS, AFT, AFV, AFX, AFY, AHT, ANA, APC, APD, AST, ASV, ATN, ATO , ATS, ATT, ATV, AVL, AWO, AWW, BCT, BEA, BEC, BIK, BOF, BOG, BOZ, BPH, BRE, BSV, CAN, CAS, CDO, CFI, CGF, CGS, CHA, -CHI, -CLO, CON, CSV, CZP, DAC, DDR, DF O, DFT, DOH, DON, EAB, EDI, EEI, EMT, EON, EPI, ERI, ESV, ETR, EUO, *-EWT, EZT, FAR, FAU, FER, FRA, GIS, GIU, GME, GON, GOO, HEU, IFO, IFR, -IFU, IFW, IFY , IHW, IMF, IRN, IRR, -IRY, ISV, ITE, ITG, ITH, *-ITN, ITR, ITT, -ITV, ITW, IWR, IWS, IWV, IWW, JBW, JNT, JOZ, JRY, JSN, JSR, JST, JSW, KFI, LAU, LEV, LIO, -LIT, LOS, LOV, LTA, LTF, LTJ, LTL, LTN, MAR, MAZ, MEI, MEL, MEP, MER, MFI, MFS, MON, MOR, MOZ, *MRE, MSE, MSO, MTF, MTN, MTT, MTW, MVY, MWF, MWW, NAB, NA T, NES, NON, NPO, NPT, NSI, OBW, OFF, OKO, OSI, OSO, OWE, -PAR, PAU, PCR, PHI, PON, POS, PSI, PUN, RHO, -RON, RRO, RSN, RTE, RTH, RUT, RWR, RWY, SAF, SAO, S AS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SFF, SFG, SFH, SFN, SFO, SFS, *SFV, SFW, SGT, SIV, SOD, SOF, SOS, SSF, *-SSO, SSY, STF, STI, *STO, STT, STW, -S VR, SVV, SZR, TER, THO, TOL, TON, TSC, TUN, UEI, UFI, UOS, UOV, UOZ, USI, UTL, UWY, VET, VFI, VNI, VSV, WEI, -WEN, YUG, ZON, mixtures of two or more species, and mixtures of two or more species.More preferably, the zeolite material is selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR, a mixture of two or more of these, or ...

[0054] Preferably, the zeolite material contained in the second coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the second coating, calculated as Fe2O3, is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0055] The zeolite material preferably comprises 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, with a framework structure consisting of one or more of Si, Al, O, and optionally H and P. In the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or even more preferably 30:1 to 40:1.

[0056] Furthermore, in the context of this invention, it is conceivable that, in addition to Cu-containing zeolite materials, preferably Cu-CHA, there is also a certain amount of H-type zeolite materials, preferably zeolite materials with a framework type CHA.

[0057] Preferably, the zeolite material contained in the second coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is more preferably 0.1-10.0% by weight, more preferably 1.0-7.0% by weight, more preferably 2.5-5.5% by weight, based on the total weight of the zeolite material, and more preferably 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight. The skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0058] Preferably, in the catalyst, the second coating is applied at a concentration of 45.77-305.12 g / L (0.75-5 g / L). 3 More preferably 61.02-183.07 g / l (1-3 g / in) 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0059] In the context of this invention, the zeolite material contained in the second coating is preferred, more preferably a zeolite material having a framework type CHA, having an average crystallite size of at least 0.5 micrometers, more preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0060] Preferably, the second coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, aluminum oxide, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of aluminum oxide and zirconium oxide, and more preferably zirconium oxide.

[0061] Preferably, in the catalyst, the second coating is applied at a concentration of 1.22-12.20 g / L (0.02-0.2 g / L). 3 More preferably 3.05-9.15 g / l (0.05-0.15 g / in). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The loading includes metal oxide binders.

[0062] Preferably, 90-100% by weight, more preferably 95-100% by weight, and even more preferably 98-100% by weight, the second coating consists of a first platinum group metal component loaded on a non-zeolite first oxide material and a zeolite material containing one or more of copper and iron, and preferably, a metal oxide binder as defined above.

[0063] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0064] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0065] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a mixture of two or more of AEI, CHA, BEA, and a mixture of two or more of them, more preferably a framework type CHA or AEI, more preferably CHA; or a first coating comprising vanadium oxide, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron, and antimony.

[0066] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, wherein the first platinum group metal component is platinum or palladium and platinum, and wherein the non-zeolite first oxide material comprises, more preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide and one or more of a mixture of two or more of Al, Zr, Ti, Si and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide, and further comprising a copper-containing zeolite material, wherein the zeolite material contained in the second coating has a framework type selected from AEI, CHA, BEA, a mixture of two or more of them and a mixture of two or more of them, more preferably framework type CHA or AEI, more preferably CHA;

[0067] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0068] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0069] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, wherein y is 95-100.

[0070] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0071] In the context of this invention, it may also be preferred that the second coating comprises vanadium oxide, more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron, and antimony. More preferably, the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon, and zirconium, more preferably on an oxide material comprising one or more of titanium and silicon, more preferably on titanium dioxide and silicon dioxide, and more preferably on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0072] The second coating, preferably 90-100% by weight, more preferably 95-100% by weight, even more preferably 98-100% by weight, and even more preferably 99-100% by weight, is composed of a first platinum group metal component loaded on a non-zeolite first oxide material and vanadium oxide loaded on an oxide material.

[0073] Preferably, in the catalyst, the second coating is applied at a concentration of 30.51-244.09 g / L (0.5-4 g / L). 3 More preferably 61.02-183.07 g / l (1-3 g / in) 3 More preferably 91.53-152.56 g / l (1.5-2.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0074] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0075] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0076] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a framework type selected from AEI, CHA, BEA, a mixture of two or more of them, and a mixture of two or more of them, more preferably framework type CHA or AEI, more preferably CHA; or a first coating comprising vanadium oxide, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron and antimony.

[0077] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, wherein the first platinum group metal component is platinum or palladium and platinum, and wherein the non-zeolite first oxide material comprises, more preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide and one or more of a mixed oxide comprising two or more of Al, Zr, Ti, Si and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide, and further comprising vanadium oxide, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron and antimony;

[0078] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0079] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0080] The second coating extends from the inlet end to the outlet end over y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, where y is 95-100; the first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0081] In the context of this invention, preferably, in the catalyst, the second coating and optionally the third coating together have a concentration of 0.035-1.41 g / L (1-40 g / ft) based on the elemental platinum group metals. 3 More preferably 0.071-0.53 g / l (2-15 g / ft) 3 Preferred concentrations are 0.11-0.35 g / L (3-10 g / ft). 3 More preferably 0.16-0.32 g / L (4.5-9.0 g / ft) 3 More preferably 0.26-0.30 g / l (7.5-8.5 g / ft) 3 The loading of platinum group metal components.

[0082] Preferably, the first non-zeolite oxide material and the optional second oxide material of the catalyst together have a content of 6.10-183.07 g / L (0.1-3 g / L). 3 Preferred concentrations are 12.20-122.05 g / L (0.2-2 g / L). 3 More preferably 24.41-91.53 g / l (0.4-1.5 g / in). 3More preferably 36.61-73.23 g / l (0.6-1.2 g / in). 3 ) load.

[0083] In the context of this invention, preferably, the catalyst of this invention does not contain the third coating according to (iv).

[0084] Preferably, the catalyst consists of a flow-through substrate, a first coating, and a second coating, wherein the first coating is located on the second coating and the second coating is located on the inner wall surface.

[0085] More preferably, the present invention relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0086] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0087] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a skeleton type selected from AEI, CHA, BEA, a mixture of two or more of them, or a mixture of two or more of them, more preferably skeleton type CHA or AEI, more preferably CHA.

[0088] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, wherein the first platinum group metal component is platinum or palladium and platinum, and wherein the non-zeolite first oxide material comprises, more preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide and one or more of a mixture of two or more of Al, Zr, Ti, Si and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide, and further comprising a copper-containing zeolite material, wherein the zeolite material contained in the second coating has a framework type selected from AEI, CHA, BEA, a mixture of two or more of them and a mixture of two or more of them, more preferably framework type CHA or AEI, more preferably CHA;

[0089] The second coating extends from the inlet end to the outlet end over a length y% of the axial length of the substrate and is disposed on the inner wall surface, wherein y is 95-100, more preferably 95-100, more preferably 98-100, and more preferably 99-100.

[0090] The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the second coating, wherein x is 20 to y, more preferably x is y or x is 20-60.

[0091] In the context of this invention, preferably, the second coating comprises, more preferably, the following components:

[0092] (A) An inlet coating comprising a platinum group metal component supported on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; and

[0093] (B) An export coating comprising a platinum group metal component loaded on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron.

[0094] The inlet coating extends from the inlet end to the outlet end along y1% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0095] The outlet coating extends from the outlet end to the inlet end at y2% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0096] Where y1 is 45-55, preferably 48-50, and y2 is 45-55, preferably 48-50;

[0097] The inlet coating contains a platinum group metal component with a loading of (l1), and the outlet coating contains a platinum group metal component with a loading of (l2), wherein the ratio of (l1):(l2) is 0.2:1 to 0.75:1, preferably 0.3:1 to 0.6:1, and more preferably 0.4:1 to 0.5:1;

[0098] The first platinum group metal component comprises, preferably, the platinum group metal component of the inlet coating and the platinum group metal component of the outlet coating;

[0099] The non-zeolite first oxide material comprises the non-zeolite oxide material of the inlet coating and the non-zeolite oxide material of the outlet coating, preferably composed of the two.

[0100] Regarding the inlet coating of the second coating, it is preferred that the platinum group metal component contained therein is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, even more preferably platinum, or palladium and platinum.

[0101] Regarding the inlet coating of the second coating, preferably, the non-zeolite oxide material loaded with platinum group metal components comprises, preferably, one or more of, the following substances: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and a mixture of two or more of Al, Zr, Ti, Si, and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide. More preferably, 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, more preferably 70-90% by weight, more preferably 75-85% by weight, of the non-zeolite oxide material is composed of alumina, and 0-40% by weight, more preferably 10-30% by weight, more preferably 15-25% by weight, of the non-zeolite oxide material is composed of zirconium oxide. Alternatively, more preferably 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, more preferably 80-100% by weight, more preferably 85-95% by weight, of the non-zeolite oxide material is composed of titanium dioxide, and 0-40% by weight, more preferably 0-20% by weight, more preferably 5-15% by weight, of the non-zeolite oxide material is composed of silicon dioxide.

[0102] Preferably, the inlet coating of the second coating comprises a zeolite material, wherein the zeolite material comprises one or more of copper and iron.

[0103] On the page, the position of the viewer, the viewer, the viewer, the viewer, the viewer, the movie Affiliates: ABW, ACO, AEI, AEL, AEN, AET, AFG AFI, AFN, AFO, AFR, AFS, AFT, AFV, AFX, AFY, AHT, ANA, APC, APD, AST, ASV. ATN、ATO、ATS、ATT、ATV、AVL、AWO、AWW、BCT、BEA、BEC、BIK、BOF、BOG、BOZ、B PH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、-CLO、CON、CSV、CZP、 DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、EPI、ERI、ESV、ETR、E UO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GOO、HEU、IFO、IFR、 -IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、ITH、*-ITN、ITR、I TT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JSR、JST、JSW、K FI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR、MAZ、MEI、M EL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、MTT、MTW、M VY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI、OSO、OW E、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、RTH、R UT, RWR, RWY, SAF, SAO, SAS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SFF, SF G、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SSY、 STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UEI 、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe mixture of two or more of these and its mixed types, more preferably selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR, wherein the zeolite material contained in the inlet coating more preferably has a skeleton type of CHA or AEI, more preferably CHA.

[0104] Preferably, the zeolite material contained in the inlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the inlet coating, calculated as Fe2O3, is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0105] The zeolite material of the inlet coating preferably comprises 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, with a skeletal structure consisting of one or more of Si, Al, O, and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or even more preferably 30:1 to 40:1.

[0106] Furthermore, in the context of this invention, it is conceivable that, in addition to Cu-containing zeolite materials, preferably Cu-CHA, there is also a certain amount of H-type zeolite materials, preferably zeolite materials with a framework type CHA.

[0107] Preferably, the zeolite material contained in the inlet coating of the second coating comprises iron, wherein the amount of iron contained in the zeolite material, calculated as Fe2O3, is more preferably 0.1-10.0% by weight, more preferably 1.0-7.0% by weight, more preferably 2.5-5.5% by weight, based on the total weight of the zeolite material, and more preferably 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight. The skeletal structure of the zeolite material is composed of one or more of Si, Al, O, and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0108] Preferably, in the catalyst, the inlet coating of the second coating has a concentration of 45.77-305.12 g / L (0.75-5 g / in). 3 More preferably 61.02-183.07 g / l (1-3 g / in) 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0109] In the context of this invention, the zeolite material contained in the inlet coating of the second coating is preferred, more preferably a zeolite material having a framework type CHA, having an average crystallite size of at least 0.5 micrometers, more preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0110] Preferably, the inlet coating of the second coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, aluminum oxide, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of aluminum oxide and zirconium oxide, and more preferably zirconium oxide.

[0111] Preferably, in the catalyst, the inlet coating of the second coating is at a concentration of 1.22-12.20 g / L (0.02-0.2 g / L). 3 More preferably 3.05-9.15 g / l (0.05-0.15 g / in). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The loading includes metal oxide binders.

[0112] The inlet coating of the second coating, preferably 90-100% by weight, more preferably 95-100% by weight, and even more preferably 98-100% by weight, consists of a platinum group metal component loaded on a non-zeolite oxide material and a zeolite material containing one or more of copper and iron, and more preferably, a metal oxide binder as defined above.

[0113] It may also be preferred that the inlet coating of the second coating comprises vanadium oxide, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises tungsten, iron and antimony.

[0114] More preferably, the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon, and zirconium; more preferably, it is supported on an oxide material comprising one or more of titanium and silicon; more preferably, it is supported on titanium dioxide and silicon dioxide; and more preferably, it is supported on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0115] The inlet coating of the second coating, preferably 90-100% by weight, more preferably 95-100% by weight, even more preferably 98-100% by weight, and even more preferably 99-100% by weight, is composed of platinum group metal components and vanadium oxides loaded on a non-zeolite oxide material.

[0116] Preferably, in the catalyst, the inlet coating of the second coating is at a concentration of 30.51-305.12 g / L (0.5-5 g / in). 3 More preferably 61.02-244.09 g / l (1-4 g / in) 3 More preferably 122.05-213.58 g / l (2-3.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0117] In the context of this invention, preferably, in the catalyst, the inlet coating is at a concentration of 0.035-0.28 g / L (1-8 g / ft). 3 Preferred concentrations are 0.11-0.25 g / L (3-7 g / ft). 3 More preferably 0.14-0.21 g / l (4-6 g / ft) 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

[0118] Regarding the export coating of the second coating, it is preferred that the platinum group metal component contained therein is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, more preferably platinum or palladium and platinum.

[0119] Preferably, the non-zeolite oxide material containing platinum group metal components in the outlet coating of the second coating comprises, more preferably, one or more of the following substances: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and mixed oxides comprising one or more of Al, Zr, Ti, Si, and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide. More preferably, 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, more preferably 70-90% by weight, more preferably 75-85% by weight, of the non-zeolite oxide material is composed of alumina, and 0-40% by weight, more preferably 10-30% by weight, more preferably 15-25% by weight, of the non-zeolite oxide material is composed of zirconium oxide. Alternatively, more preferably 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, more preferably 80-100% by weight, more preferably 85-95% by weight, of the non-zeolite oxide material is composed of titanium dioxide, and 0-40% by weight, more preferably 0-20% by weight, more preferably 5-15% by weight, of the non-zeolite oxide material is composed of silicon dioxide.

[0120] The outlet coating of the preferred second coating comprises a zeolite material, which comprises one or more of copper and iron.

[0121] The pages, the views of the square, the square, the square, the square, the square, and the square. Affiliates: ABW, ACO, AEI, AEL, AEN, AET, AFG AFI, AFN, AFO, AFR, AFS, AFT, AFV, AFX, AFY, AHT, ANA, APC, APD, AST, ASV. ATN、ATO、ATS、ATT、ATV、AVL、AWO、AWW、BCT、BEA、BEC、BIK、BOF、BOG、BOZ、B PH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、-CLO、CON、CSV、CZP、 DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、EPI、ERI、ESV、ETR、E UO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GOO、HEU、IFO、IFR、 -IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、ITH、*-ITN、ITR、I TT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JSR、JST、JSW、K FI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR、MAZ、MEI、M EL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、MTT、MTW、M VY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI、OSO、OW E、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、RTH、R UT, RWR, RWY, SAF, SAO, SAS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SFF, SF G、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SSY、 STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UEI 、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe zeolite material contained in the outlet coating of the second coating has a framework type selected from AEI, GME, CHA, BEA, FAU, and MOR, and a mixture of two or more of these materials, preferably selected from AEI, CHA, and BEA, and a mixture of two or more of these materials, wherein the zeolite material contained in the outlet coating more preferably has a framework type of CHA or AEI. More preferably, the zeolite material contained in the outlet coating of the second coating has a framework type of CHA.

[0122] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the zeolite material used for the export coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P. In the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, and even more preferably 15:1 to 40:1. More preferably, in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is 15:1 to 25:1. Alternatively, more preferably, in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is 30:1 to 40:1.

[0123] Preferably, the zeolite material contained in the outlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the outlet coating is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0124] Furthermore, in the context of this invention, it is conceivable that, in addition to Cu-containing zeolite materials, preferably Cu-CHA, there is also a certain amount of H-type zeolite materials, preferably zeolite materials with a framework type CHA.

[0125] Preferably, the zeolite material contained in the outlet coating of the second coating comprises iron, wherein the amount of iron contained in the zeolite material, calculated as Fe2O3, is more preferably 0.1-10.0% by weight, more preferably 1.0-7.0% by weight, more preferably 2.5-5.5% by weight, based on the total weight of the zeolite material, and more preferably 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight. The skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0126] Preferably, in the catalyst, the outlet coating of the second coating has a concentration of 45.77-305.12 g / L (0.75-5 g / L). 3 More preferably 61.02-183.07 g / l (1-3 g / in) 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0127] In the context of this invention, the zeolite material contained in the outlet coating of the second coating is preferred, more preferably a zeolite material having a framework type CHA, having an average crystallite size of at least 0.5 micrometers, more preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0128] Preferably, the outlet coating of the second coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, aluminum oxide, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of aluminum oxide and zirconium oxide, and more preferably zirconium oxide.

[0129] Preferably, in the catalyst, the outlet coating of the second coating is at a concentration of 1.22-12.20 g / L (0.02-0.2 g / L). 3 More preferably 3.05-9.15 g / l (0.05-0.15 g / in). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The load includes oxide binders.

[0130] The exit coating of the second coating, preferably 90-100% by weight, more preferably 95-100% by weight, and even more preferably 98-100% by weight, consists of a platinum group metal component loaded on a non-zeolite oxide material and a zeolite material containing one or more of copper and iron, and more preferably, a metal oxide binder as defined above.

[0131] It is also preferable that the exit coating of the second coating comprises vanadium oxide, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron, and antimony. More preferably, the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon, and zirconium, more preferably on an oxide material comprising one or more of titanium and silicon, more preferably on titanium dioxide and silicon dioxide, more preferably on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0132] The exit coating of the second coating, preferably 90-100% by weight, more preferably 95-100% by weight, even more preferably 98-100% by weight, and even more preferably 99-100% by weight, consists of a platinum group metal component and vanadium oxide loaded on a non-zeolite oxide material, wherein the vanadium oxide is more preferably one or more of vanadium oxide (V) and vanadium oxide (IV), and wherein the vanadium oxide optionally contains tungsten, iron, and antimony.

[0133] Preferably, in the catalyst, the outlet coating of the second coating is 30.51-305.12 g / L (0.5-5 g / L). 3 More preferably 61.02-244.09 g / l (1-4 g / in) 3 More preferably 122.05-213.58 g / l (2-3.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0134] Preferably, in the catalyst, the outlet coating is at 0.07-1.41 g / L (2-40 g / ft). 3 More preferably 0.11-0.71 g / l (3-20 g / ft) 3 More preferably 0.21-0.53 g / l (6-15 g / ft) 3 More preferably 0.32-0.42 g / L (9-12 g / ft) 3 The loading includes platinum group metal components, expressed as elemental platinum group metals.

[0135] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0136] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0137] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a skeleton type selected from AEI, CHA, BEA, a mixture of two or more of them, or a mixture of two or more of them, more preferably skeleton type CHA or AEI, more preferably CHA.

[0138] (iii) A second coating comprising, more preferably, the following components:

[0139] (A) An inlet coating comprising a platinum group metal component supported on a non-zeolite oxide material, and further comprising a zeolite material containing one or more of copper and iron; and

[0140] (B) an export coating comprising a platinum group metal component loaded on a non-zeolite oxide material and further comprising a zeolite material containing one or more of copper and iron.

[0141] The inlet coating extends from the inlet end to the outlet end along y1% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0142] The outlet coating extends from the outlet end to the inlet end at y2% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0143] Where y1 is 45-55, preferably 48-50, and y2 is 45-55, preferably 48-50;

[0144] The inlet coating contains a platinum group metal component with a loading of (l1), and the outlet coating contains a platinum group metal component with a loading of (l2), wherein the ratio of (l1):(l2) is 0.2:1 to 0.75:1, preferably 0.3:1 to 0.6:1, and more preferably 0.4:1 to 0.5:1;

[0145] The first platinum group metal component comprises, preferably, the platinum group metal component of the inlet coating and the platinum group metal component of the outlet coating;

[0146] The non-zeolite first oxide material includes the non-zeolite oxide material of the inlet coating and the non-zeolite oxide material of the outlet coating, preferably composed of them;

[0147] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0148] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0149] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or disposed on the inner wall surface and the third coating, or disposed on the third coating, wherein y is 95-100, more preferably 95-100, more preferably 98-100, and more preferably 99-100.

[0150] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, wherein x is 20 to y, more preferably x is y.

[0151] More preferably, the catalyst does not include the third coating according to (iv).

[0152] In the context of this invention, it is also preferred that the catalyst comprises a flow-through substrate, a first coating, a second coating, and a third coating, and more preferably consists of therein.

[0153] Where z is 20-65, more preferably 30-60, and even more preferably 40-55; or

[0154] Where z is 80-100, more preferably 95-100, even more preferably 98-100. More preferably, z is 20-65, more preferably 30-60, even more preferably 40-55.

[0155] Therefore, the present invention preferably relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0156] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0157] (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0158] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0159] (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material;

[0160] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, wherein z is 20-65, more preferably 30-60, more preferably 40-55, or z is 80-100, more preferably 95-100, more preferably 98-100.

[0161] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface and the third coating, or disposed on the third coating, wherein y is 95-100.

[0162] The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the second coating, wherein x is 20 to y, more preferably x is y or x is 20-60.

[0163] In the context of this invention, preferably, the second platinum group metal component contained in the third coating is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, and even more preferably platinum.

[0164] Preferably, the second oxide material containing the second platinum group metal component in the third coating comprises, more preferably, one or more of, aluminum oxide, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and a mixture of two or more of Al, Zr, Ti, Si, and Ce, preferably one or more of aluminum oxide, zirconium oxide, titanium dioxide, and silicon dioxide. More preferably, 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, of the second oxide material is composed of aluminum oxide and optionally zirconium oxide, wherein 60-100% by weight, more preferably 70-90% by weight, more preferably 75-85% by weight, of the second oxide material is composed of aluminum oxide, and 0-40% by weight, more preferably 10-30% by weight, more preferably 15-25% by weight, of the second oxide material is composed of zirconium oxide. Alternatively, more preferably 90-100% by weight, more preferably 95-100% by weight, more preferably 99-100% by weight, the second oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, more preferably 80-100% by weight, more preferably 85-95% by weight, the second oxide material is composed of titanium dioxide, and 0-40% by weight, more preferably 0-20% by weight, more preferably 5-15% by weight, the second oxide material is composed of silicon dioxide.

[0165] Preferably, 90-100% by weight, more preferably 95-100% by weight, and even more preferably 99-100% by weight, of the third coating consists of a second platinum group metal component loaded on the second oxide material.

[0166] Preferably, in the catalyst, the second coating is applied at a concentration of 0.018-0.21 g / L (0.5-6 g / ft). 3 More preferably 0.026-0.14 g / l (0.75-4 g / ft) 3 More preferably 0.035-0.123 g / l (1-3.5 g / ft) 3 More preferably 0.035-0.07 g / l (1-2 g / ft) 3 ) or more preferably 0.088-0.123 g / l (2.5-3.5 g / ft) 3 The loading of ) includes the first platinum group metal component, expressed as elemental platinum group metals.

[0167] Preferably, in the catalyst, the third coating is applied at a concentration of 0.18-0.71 g / L (5-20 g / ft). 3 More preferably 0.28-0.53 g / l (8-15 g / ft) 3 More preferably 0.32-0.49 g / l (9-14 g / ft) 3 More preferably 0.32-0.39 g / l (9-11 g / ft) 3 ) or more preferably 0.42-0.49 g / l (12-14 g / ft) 3 The loading of ) includes a second platinum group metal component, expressed as an elemental platinum group metal.

[0168] Preferably, in the catalyst, the second coating is applied at a concentration of 3.05-91.54 g / L (0.05-1.5 g / L). 3 More preferably 6.10-61.02 g / l (0.1-1.0 g / in). 3 More preferably 12.20-36.61 g / l (0.2-0.6 g / in). 3 The loading of the non-zeolite first oxide material includes the loading of the first platinum group metal component.

[0169] Preferably, in the catalyst, the third coating is applied at a concentration of 3.05-91.54 g / L (0.05-1.5 g / L). 3 More preferably 6.10-61.02 g / l (0.1-1.0 g / in). 3 More preferably 12.20-36.61 g / l (0.2-0.6 g / in). 3 More preferably 24.41-36.61 g / l (0.4-0.6 g / in). 3 The loading amount includes a second oxide material loaded with a second platinum group metal component.

[0170] Preferably, the third coating comprises 0-0.001% by weight, more preferably 0-0.0001% by weight, and even more preferably 0.00001% by weight. More preferably, the third coating does not contain zeolite material, wherein the zeolite material preferably comprises one or more of copper and iron.

[0171] Preferably, 0-0.001% by weight, more preferably 0-0.0001% by weight, even more preferably 0.00001% by weight, the third coating is composed of one or more vanadium oxides, and more preferably, the third coating is free of vanadium oxides.

[0172] More preferably, the present invention relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0173] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0174] (ii) A first coating comprising a copper-containing zeolite material, wherein the zeolite material contained in the first coating has a skeleton type selected from AEI, CHA, BEA, a mixture of two or more of them, or a mixture of two or more of them, more preferably skeleton type CHA or AEI, more preferably CHA.

[0175] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, wherein the first platinum group metal component is platinum or palladium and platinum, and wherein the non-zeolite first oxide material comprises, more preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide and one or more of a mixture of two or more of Al, Zr, Ti, Si and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide, and further comprising a copper-containing zeolite material, wherein the zeolite material contained in the second coating has a framework type selected from AEI, CHA, BEA, a mixture of two or more of them and a mixture of two or more of them, more preferably framework type CHA or AEI, more preferably CHA;

[0176] (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material, wherein the second platinum group metal component contained in the third coating is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, more preferably platinum, and the second oxide material loaded with the second platinum group metal component contained in the third coating comprises, more preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide and one or more of a mixed oxide comprising two or more of Al, Zr, Ti, Si and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide;

[0177] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, wherein z is 20-65, more preferably 30-60, and more preferably 40-55.

[0178] The second coating extends from the inlet end to the outlet end over a length y% of the substrate axial length and is disposed on the inner wall surface and the third coating, where y is 95-100.

[0179] The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the second coating, wherein x is 20 to y, more preferably x is y or x is 20-60.

[0180] Preferably, the third coating comprises a diesel oxidation catalyst component, more preferably composed of a diesel oxidation catalyst component.

[0181] Preferably, the second coating comprises one or more nitrogen oxide (NOx) reducing components and one or more ammonia oxide (AMOx) components, more preferably composed of the latter.

[0182] Preferably, the first coating contains a nitrogen oxide (NOx) reducing component, more preferably it is composed of such a component.

[0183] Regarding the flow-through substrate of the catalyst, the substrate preferably comprises a ceramic or metallic material. More preferably, the flow-through substrate of the catalyst comprises a ceramic material, more preferably composed of a ceramic material, wherein the ceramic material more preferably comprises, more preferably composed of: alumina, silicon dioxide, silicates, aluminosilicates, more preferably cordierite or mullite, aluminum titanate, silicon carbide, zirconium oxide, magnesium oxide, more preferably one or more of spinel and titanium dioxide, more preferably one or more of silicon carbide and cordierite, more preferably cordierite. Alternatively, more preferably, the flow-through substrate of the catalyst comprises a metallic material, more preferably composed of a metallic material, wherein the metallic material preferably comprises, more preferably composed of: oxygen and one or more of iron, chromium and aluminum.

[0184] The present invention further relates to an exhaust gas treatment system for treating exhaust gas streams exiting a diesel engine, wherein the exhaust gas treatment system has an upstream end for introducing the exhaust gas streams into the exhaust gas treatment system, wherein the exhaust gas treatment system includes the catalyst of the present invention and one or more of a diesel oxidation catalyst, a selective catalytic reduction catalyst, and a particulate filter.

[0185] According to a first aspect, preferably, the exhaust gas treatment system includes a diesel oxidation catalyst comprising a coating disposed on a substrate, a selective catalytic reduction catalyst comprising a coating disposed on a substrate, and the catalyst of the present invention, wherein the diesel oxidation catalyst is located downstream of the upstream end of the exhaust gas treatment system, wherein the selective catalytic reduction catalyst is located downstream of the diesel oxidation catalyst, and wherein the catalyst of the present invention is located downstream of the selective catalytic reduction catalyst.

[0186] According to a second aspect, preferably, the waste gas treatment system includes a selective catalytic reduction catalyst comprising a coating disposed on a substrate and the catalyst of the present invention, wherein the selective catalytic reduction catalyst is located downstream of the upstream end of the waste gas treatment system, and wherein the catalyst of the present invention is located downstream of the selective catalytic reduction catalyst.

[0187] According to a third aspect, preferably, the waste gas treatment system includes a selective catalytic reduction catalyst comprising a coating disposed on a substrate and the catalyst of the present invention, wherein the selective catalytic reduction catalyst is located downstream of the upstream end of the waste gas treatment system, and wherein the catalyst of the present invention is located downstream of the selective catalytic reduction catalyst. According to this aspect, it is conceivable that the substrate of the selective catalytic reduction catalyst and the substrate of the catalyst of the present invention are a single substrate, such that the coating of the selective catalytic reduction catalyst forms an upstream region on the single substrate, and the coating of the catalyst of the present invention forms a downstream region on the single substrate.

[0188] According to any aspect, preferably, the exhaust gas treatment system further includes a filter, more preferably a particulate filter, more preferably a catalytic particulate filter, wherein the filter is located downstream of the catalyst of the present invention.

[0189] Regarding the diesel oxidation catalyst contained in the system, it is preferred that it contains platinum group metals supported on an oxide material.

[0190] Regarding the selective catalytic reduction catalyst contained in the system, it is preferred to contain vanadium oxide and one or more zeolite materials containing one or more of copper and iron.

[0191] According to the fourth aspect, preferably, the exhaust gas treatment system includes the catalyst and filter of the present invention, more preferably a particulate filter, more preferably a catalytic particulate filter, wherein the catalyst of the present invention is located downstream of the upstream end of the exhaust gas treatment system, wherein the filter is located downstream of the catalyst of the present invention, and optionally the exhaust gas treatment system further includes a diesel oxidation catalyst, which is located downstream of the catalyst of the present invention and upstream of the filter.

[0192] According to any aspect, preferably, the exhaust gas treatment system further includes an injector for injecting fluid into the exhaust gas stream exiting the diesel engine, the injector being located upstream of the diesel oxidation catalyst according to the first aspect, or upstream of the selective catalytic reduction catalyst according to the second aspect or the catalyst according to the third aspect, and downstream of the upstream end of the exhaust gas treatment system, wherein the fluid is more preferably an aqueous urea solution.

[0193] This invention further relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, and preferably a method for preparing the catalyst of this invention, comprising:

[0194] (a) Provide an uncoated flow-through substrate, the substrate including an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the substrate and extending through the substrate.

[0195] (b) Optionally, a slurry comprising a second platinum group metal component and a second oxide material is provided, and the slurry is disposed on the inner wall surface of the substrate at z% of the axial length of the substrate from the outlet end to the inlet end, wherein z is 0-100, and the slurry disposed on the substrate is calcined to obtain a third coating disposed on the substrate.

[0196] (c) Providing one or more slurries comprising a first platinum group metal component, a non-zeolite first oxide material and water, as well as vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, wherein the one or more slurries are disposed on an inner wall surface, or on an inner wall surface and a third coating, or on a third coating at y% of the axial length of the substrate, wherein y is 95-100, and calcining the one or more slurries disposed on the substrate to obtain a second coating disposed on the substrate;

[0197] (d) Providing a slurry comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, wherein the slurry is disposed on a second coating at x% of the axial length of the substrate from the inlet end to the outlet end, wherein x is 20 to y, and calcining the slurry disposed on the substrate to obtain a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx. Preferably, (c) comprises:

[0198] (c.1) A slurry is formed by using a first platinum group metal precursor, more preferably a platinum precursor, an aqueous mixture of a non-zeolite first oxide material, and a mixture of zirconium acetate and zeolite material (more preferably having a CHA framework type and containing one or more of copper and iron), or a vanadium oxalate solution, more preferably by adding oxide material, and more preferably by using a dispersant.

[0199] (c.2) Along y% of the axial length of the substrate from the inlet end to the outlet end, the slurry obtained in (c.1) is placed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0200] (c.3) Optionally, the slurry obtained in (c.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0201] (c.4) Calcination of the slurry obtained in (c.2) on the substrate in a gaseous atmosphere, or drying the slurry-treated substrate obtained in (c.3), wherein the gaseous atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C.

[0202] Alternatively, (c) preferably includes:

[0203] (c.1') By ​​mixing a first platinum group metal precursor, preferably a platinum precursor, with an aqueous mixture of a non-zeolite first oxide material, and a mixture of zirconium acetate and zeolite material (more preferably having a CHA framework type and containing one or more of copper and iron) or a vanadium oxalate solution, two slurries are formed, more preferably by adding oxide material, and more preferably by using a dispersant, to obtain a first slurry with a platinum group metal component loading (l1) and a second slurry with a platinum group metal component loading (l2);

[0204] (c.2') Along the axial length y1% of the substrate from the inlet end to the outlet end, the first slurry obtained in (c.1') is placed on the inner wall surface, or on the inner wall surface and the surface of the third coating, or on the third coating, where y1 is 48-50;

[0205] (c.3') Along y2% of the axial length of the substrate from the outlet end to the inlet end, the second slurry obtained in (c.1') is placed on the inner wall surface, or on the inner wall surface and the surface of the third coating, or on the third coating, where y2 is 48-50;

[0206] (c.4') Optionally, the slurry obtained in (c.2') and (c.3') and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0207] (c.5') Calcination of the slurry obtained in (c.2') and (c.3') on the substrate, or the dried slurry-treated substrate obtained in (c.4'), wherein the gas atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C.

[0208] According to (c.3) and (c.4'), drying is preferably carried out in a gaseous atmosphere at a temperature of 90-200°C, more preferably 100-190°C. More preferably, according to (c.3) and (c.4'), drying is carried out in a gaseous atmosphere at a temperature of 110-180°C.

[0209] Regarding (c.3) and (c.4'), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, with air being more preferred.

[0210] According to (c.4) and (c.5'), calcination is preferably carried out in a gaseous atmosphere at a temperature of 550-650°C.

[0211] According to (c.4) and (c.5'), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, more preferably air.

[0212] Preferably, (d) includes:

[0213] (d.1) A slurry is formed by mixing a zirconium acetate mixture with a zeolite material (more preferably having a CHA framework and containing one or more of copper and iron) or with a vanadium oxalate solution, more preferably by adding an oxide material, and more preferably by using a dispersant;

[0214] (d.2) The slurry is applied to the second coating at x% of the axial length of the substrate from the inlet end to the outlet end, where x is y, or where x is 20-60, more preferably 40-60, more preferably 45-55, more preferably 48-52;

[0215] (d.3) Optionally, the slurry obtained in (d.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0216] (d.4) Calcination of the slurry obtained in (d.2) on the substrate, or the dried slurry-treated substrate obtained in (d.3) in a gaseous atmosphere, wherein the gaseous atmosphere preferably has a temperature of 300-600°C, more preferably 350-550°C.

[0217] According to (d.3), drying is preferably carried out in a gaseous atmosphere at a temperature of 90-200°C, more preferably 100-190°C. More preferably, according to (d.3), drying is carried out in a gaseous atmosphere at a temperature of 110-180°C.

[0218] According to (d.3), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, with air being more preferred.

[0219] According to (d.4), calcination is preferably carried out in a gaseous atmosphere at a temperature of 400-500°C.

[0220] According to (d.4), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, and more preferably air.

[0221] Preferably, (b) includes:

[0222] (b.1) A slurry is formed using an aqueous mixture of a second platinum group metal precursor, more preferably a platinum precursor and a second oxide material;

[0223] (b.2) Along z% of the axial length of the substrate from the outlet end to the inlet end, the slurry obtained in (b.1) is applied to the inner wall surface of the substrate;

[0224] (b.3) Optionally, the slurry obtained in (b.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0225] (b.4) Calcine the slurry obtained in (b.2) on the substrate, or the dried slurry-treated substrate obtained in (b.3) in a gaseous atmosphere, wherein the gaseous atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C;

[0226] Where z is 20-65, more preferably 30-60, and even more preferably 40-55; or

[0227] Where z is 80-100, more preferably 95-100, and even more preferably 98-100.

[0228] According to (b.3), drying is preferably carried out in a gaseous atmosphere at a temperature of 90-200°C, more preferably 100-190°C. More preferably, according to (b.3), drying is carried out in a gaseous atmosphere at a temperature of 110-180°C.

[0229] According to (b.3), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, with air being more preferred.

[0230] According to (b.4), calcination is preferably carried out in a gaseous atmosphere at a temperature of 550-650°C.

[0231] According to (b.4), preferably, the gaseous atmosphere comprises, more preferably, one or more of air, lean air, and oxygen, with air being more preferred.

[0232] Preferably, y is 98-100, more preferably 99-100.

[0233] Preferably, one or more of (b), (c) and (d) are performed by wet impregnation or pre-wet impregnation.

[0234] Preferably, the solvent used in the method of the present invention is one or more of alcohol and water, preferably water.

[0235] In the context of this invention, it is conceivable that, in addition to Cu-containing zeolite material, preferably Cu-CHA, a certain amount of H-type zeolite material, preferably zeolite material with a framework type CHA, is added to one or more of (c.1), (c.1'), and (d.1).

[0236] The present invention further relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC and NOx, preferably the catalyst of the present invention for the selective catalytic reduction of NO, ammonia, HC and NOx, which can be obtained by the method of the present invention or obtained by the method of the present invention.

[0237] The present invention further relates to the use of the catalyst of the present invention for the selective catalytic reduction of NO oxidation, ammonia oxidation, HC oxidation and NOx, which is used for the simultaneous selective catalytic reduction of NOx, ammonia oxidation, nitric oxide oxidation and hydrocarbon oxidation.

[0238] Furthermore, the present invention relates to a method for the simultaneous selective catalytic reduction of NOx, oxidation of ammonia, oxidation of nitric oxide, and oxidation of hydrocarbons, comprising:

[0239] (1) Provide an airflow containing one or more of NOx, ammonia, nitric oxide and hydrocarbons;

[0240] (2) Contact the gas flow provided in (1) with the catalyst of the present invention for NO oxidation, ammonia oxidation, HC oxidation and selective catalytic reduction of NOx.

[0241] II. A second catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx.

[0242] The present invention further relates to a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0243] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0244] (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0245] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0246] (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material;

[0247] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 10-80.

[0248] The second coating extends from the outlet end to the inlet end at y% of the axial length of the substrate and is disposed on the surface of the third coating and the inner wall, or disposed on the third coating, where y is 10-80.

[0249] The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the inner wall surface and the second coating, where x is 95-100.

[0250] Preferably, x is 98-100, and more preferably 99-100.

[0251] Preferably, the second coating is disposed on the surface of the third coating and the inner wall. More preferably, y is 30-70, even more preferably 40-60, and even more preferably 45-55.

[0252] The preferred value of z is 10-60, more preferably 15-40, and even more preferably 20-30.

[0253] Preferably, x is 98-100, more preferably 99-100, the second coating is disposed on the surface of the third coating and the inner wall, y is 30-70, more preferably 40-60, more preferably 45-55, z is 10-60, more preferably 15-40, more preferably 20-30.

[0254] Preferably, the first coating has the chemical composition of the first coating of the catalyst of the present invention according to I, as defined above.

[0255] Regarding the first coating, it is preferable that it contains one or more zeolite materials selected from copper and iron, wherein the zeolite material contained in the first coating has a framework type selected from AEI, CHA, BEA, and mixtures of two or more of them, or mixtures of two or more of them. More preferably, the zeolite material contained in the first coating has a framework type of CHA or AEI, and more preferably CHA.

[0256] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight of the zeolite material in the first coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, in terms of the SiO2:Al2O3 molar ratio, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or even more preferably 30:1 to 40:1.

[0257] Preferably, the zeolite material contained in the first coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the first coating, calculated as Fe2O3, is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0258] Preferably, the first coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably comprises one or more of alumina and zirconium oxide, and more preferably comprises zirconium oxide. More preferably, the first coating comprises the metal oxide binder in an amount of 0.1-7% by weight, more preferably 2-6% by weight, based on the weight of the zeolite material in the first coating.

[0259] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the first coating consists of a zeolite material comprising one or more of copper and iron, and preferably, a metal oxide binder as defined above.

[0260] Preferably, the first coating is applied at a concentration of 0.5-3.5 g / in. 3 Preferred size: 2-3g / in 3 The loading includes zeolite materials.

[0261] Preferably, the catalyst is present at a concentration of 1-4 g / in 3 Preferred concentration: 2.5-3.5 g / in 3 The load includes the first coating.

[0262] Preferably, the second coating has the chemical composition of the second coating of the catalyst of the present invention according to I, as defined above.

[0263] Regarding the second coating, it is preferred that the first platinum group metal component contained in the second coating is one or more of platinum, palladium and rhodium, and more preferably one or more of platinum and palladium.

[0264] Preferably, the non-zeolite first oxide material on which the first platinum group metal component contained in the second coating is loaded comprises, more preferably, the following substances: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more of a mixed oxide containing two or more of Al, Zr, Ti, Si and Ce, more preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide.

[0265] Preferably, the second coating comprises a zeolite material containing one or more of copper and iron, wherein the zeolite material contained in the second coating has a framework type selected from AEI, CHA, BEA, a mixture of two or more of them, and a mixture of two or more of them. More preferably, the zeolite material contained in the second coating has a framework type of CHA or AEI, more preferably CHA.

[0266] Preferably, the zeolite material contained in the second coating comprises copper, wherein the amount of copper contained in the zeolite material, calculated as CuO, is more preferably 1-10% by weight, more preferably 2-8% by weight, and more preferably 3-6% by weight, based on the total weight of the zeolite material. More preferably, the amount of iron contained in the zeolite material of the second coating, calculated as Fe2O3, is 0-0.01% by weight, more preferably 0-0.001% by weight, and more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0267] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight of the zeolite material in the second coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is more preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or even more preferably 30:1 to 40:1.

[0268] Preferably, the second coating further comprises a metal oxide binder, wherein the metal oxide binder more preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of alumina and zirconium oxide, more preferably zirconium oxide. More preferably, the second coating comprises the metal oxide binder in an amount of 0.1-7% by weight, more preferably 2-6% by weight, based on the weight of the zeolite material of the second coating.

[0269] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, the second coating consists of a first platinum group metal component loaded on a non-zeolite first oxide material, one or more vanadium oxides, and a zeolite material containing one or more of copper and iron, and optionally a metal oxide binder as defined above.

[0270] Preferably, the second coating is applied at a concentration of 1-2.5 g / in. 3 The loading includes zeolite materials.

[0271] Preferably, the second coating is applied at a concentration of 1-10 g / ft. 3 The loading includes the first platinum group metal component.

[0272] Preferably, the second coating is applied at a concentration of 0.1-1 g / in. 3 The loading includes non-zeolite first oxide materials.

[0273] Preferably, the catalyst is present at a concentration of 1-3 g / in 3 The load includes a second coating.

[0274] Regarding the third coating, it is preferred that it has the composition of the third coating of the catalyst of the present invention according to I as defined above.

[0275] Regarding the third coating, it is preferred that the second platinum group metal component contained in the coating is one or more of platinum, palladium and rhodium, more preferably one or more of platinum and palladium, and even more preferably platinum.

[0276] Preferably, the second oxide material containing the second platinum group metal component in the third coating comprises, more preferably, one or more of, aluminum oxide, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and a mixture of two or more of Al, Zr, Ti, Si, and Ce, more preferably one or more of aluminum oxide, zirconium oxide, titanium dioxide, and silicon dioxide. More preferably, 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight, of the second oxide material is composed of aluminum oxide and optionally zirconium oxide; wherein preferably 60-100% by weight, more preferably 70-90% by weight, more preferably 75-85% by weight, of the second oxide material is composed of aluminum oxide, and wherein preferably 0-40% by weight, more preferably 10-30% by weight, more preferably 15-25% by weight, of the second oxide material is composed of zirconium oxide. Alternatively, more preferably 95-100% by weight, more preferably 98-100% by weight, more preferably 99-100% by weight, the second oxide material is composed of titanium dioxide and optionally silicon dioxide; wherein preferably 60-100% by weight, more preferably 80-100% by weight, more preferably 85-95% by weight, the second oxide material is composed of titanium dioxide, and wherein preferably 0-40% by weight, more preferably 0-20% by weight, more preferably 5-15% by weight, the second oxide material is composed of silicon dioxide.

[0277] Preferably, 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, the third coating consists of a second platinum group metal component loaded on the second oxide material.

[0278] Preferably, the third coating is applied at a concentration of 5-30 g / ft. 3 Preferred concentration: 10-20g / ft 3 The loading includes a second platinum group metal component.

[0279] Preferably, the third coating is applied at a concentration of 0.1-4 g / in. 3 Preferred concentration: 0.2-2 g / in 3 More preferably 0.5-1 g / in 3 The loading includes a second oxide material.

[0280] The catalyst is preferably present at a concentration of 0.1-4 g / in. 3 Preferred concentration: 0.2-2 g / in 3 More preferably 0.5-1 g / in 3 The load includes a third coating.

[0281] Regarding the flow-through substrate, it is preferred to be a flow-through substrate of the catalyst as defined above according to I.

[0282] Preferably, the catalyst consists of a flow-through substrate, a first coating, a second coating, and a third coating.

[0283] The invention is illustrated by the following first set of embodiments and combinations of embodiments derived from the cited and inverse references shown. This set of embodiments may be combined with the second set of embodiments indicated below. In particular, it should be noted that in each case of reference to a series of embodiments, for example in the context of the term "catalyst according to any one of embodiments 1-4," each embodiment within that scope is meant to be explicitly disclosed to those skilled in the art that the wording of the term should be understood by those skilled in the art to be synonymous with "catalyst according to any one of embodiments 1, 2, 3, and 4." Furthermore, it is explicitly stated that the following set of embodiments is not a set of claims defining the scope of protection, but rather represents a suitable structured portion of the description of the general and preferred aspects of the invention.

[0284] 1. A catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0285] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0286] (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0287] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0288] (iv) An optional third coating comprising a second platinum group metal component loaded on the second oxide material;

[0289] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100;

[0290] The second coating extends from the inlet end to the outlet end at y% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, wherein y is 95-100.

[0291] The first coating extends from the inlet end to the outlet end over x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

[0292] 2. The catalyst according to embodiment 1, wherein y is 95-100, preferably 98-100, more preferably 99-100, and wherein x is y.

[0293] 3. The catalyst according to embodiment 1, wherein y is 95-100, preferably 98-100, more preferably 99-100, and wherein x is 20-60, preferably 40-60, more preferably 45-55, and even more preferably 48-52.

[0294] 4. The catalyst according to any one of the embodiments 1-3, wherein z is 0-65, preferably 0-60, more preferably 0-55, or wherein z is 80-100, preferably 95-100, more preferably 98-100.

[0295] 5. The catalyst according to any one of embodiments 1-4, wherein the first coating comprises a zeolite material containing one or more of copper and iron.

[0296] 6.If you have 1-5 heads, you will be able to see, you will be able to The following names are: ABW, ACO, AEI, AE L、AEN、AET、AFG、AFI、AFN、AFO、AFR、AFS、AFT、AFV、AFX、AFY、AHT、ANA、APC、 APD、AST、ASV、ATN、ATO、ATS、ATT、ATV、AVL、AWO、AWW、BCT、BEA、BEC、BIK、BO F、BOG、BOZ、BPH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、-CLO、CO N、CSV、CZP、DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、EPI、ERI、 ESV、ETR、EUO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GOO、HEU、 IFO、IFR、-IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、ITH、*-IT N、ITR、ITT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JSR、JST 、JSW、KFI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR、MAZ 、MEI、MEL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、MTT、 MTW、MVY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI、OS O、OWE、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、RT H、RUT、RWR、RWY、SAF、SAO、SAS、SAT、SAV、SBE、SBN、SBS、SBT、SEW、SFE、SFF、 SFG、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SSY 、STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UEI 、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe mixture of two or more of these materials, and the type of mixture thereof, is preferably selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR; more preferably selected from AEI, GME, CHA, BEA, FAU, and MOR; and even more preferably selected from AEI, CHA, and BEA. The zeolite material contained in the first coating is more preferably of the skeleton type CHA or AEI, and more preferably CHA.

[0297] 7. The catalyst according to any one of embodiments 1-6, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the zeolite material has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, in terms of SiO2:Al2O3 molar ratio, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or more preferably 30:1 to 40:1.

[0298] 8. The catalyst according to any one of embodiments 1-7, wherein the zeolite material contained in the first coating comprises copper, wherein the amount of copper contained in the zeolite material, based on CuO, is preferably 1-10% by weight, more preferably 2-8% by weight, even more preferably 3-6% by weight, based on the total weight of the zeolite material, wherein the amount of iron contained in the zeolite material of the first coating, based on Fe2O3, is preferably 0-0.01% by weight, more preferably 0-0.001% by weight, even more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0299] 9. The catalyst according to any one of embodiments 1-7, wherein the zeolite material contained in the first coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is preferably 0.1-10.0 wt%, more preferably 1.0-7.0 wt%, more preferably 2.5-5.5 wt%, based on the total weight of the zeolite material, and wherein preferably 95-100 wt%, more preferably 98-100 wt%, more preferably 99-100 wt%, the skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0300] 10. A catalyst according to any one of embodiments 1-9, wherein in said catalyst, the first coating is at a concentration of 30.51-183.07 g / L (0.5-3 g / L). 3 Preferred concentrations are 45.77-122.05 g / L (0.75-2 g / L). 3 More preferably 48.82-97.64 g / l (0.8-1.6 g / in) 3 More preferably 48.82-67.13 g / l (0.8-1.1 g / in) 3 ) or more preferably 73.23-97.64 g / l (1.2-1.6 g / in) 3 The loading includes zeolite materials.

[0301] 11. The catalyst according to any one of embodiments 5-10, wherein the zeolite material contained in the first coating, preferably a zeolite material having a framework type CHA, has an average crystallite size of at least 0.5 micrometers, preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and even more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0302] 12. The catalyst according to any one of embodiments 1-11, wherein the first coating further comprises a metal oxide binder, wherein the metal oxide binder preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixed oxide comprising two or more of Zr, Al, Ti, and Si, more preferably comprising one or more of alumina and zirconium oxide, more preferably comprising zirconium oxide, wherein in the catalyst, the first coating is more preferably at a concentration of 0.61-12.20 g / L (0.01-0.2 g / L). 3 More preferably 1.22-9.15 g / l (0.02-0.15 g / in). 3 More preferably 3.66-7.32 g / l (0.06-0.12 g / in). 3 The loading includes metal oxide binders.

[0303] 13. The catalyst according to any one of embodiments 1-12, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the first coating is composed of one or more zeolite materials comprising copper and iron, and preferably, a metal oxide binder according to embodiment 12.

[0304] 14. The catalyst according to any one of embodiments 1-13, wherein the first coating comprises vanadium oxide, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally includes one or more of tungsten, iron and antimony.

[0305] 15. The catalyst according to embodiment 14, wherein the vanadium oxide is supported on one or more of titanium, silicon and zirconium, preferably on an oxide material containing one or more of titanium and silicon, wherein more preferably, the oxide material is one or more of titanium dioxide and silicon dioxide, more preferably titanium dioxide, wherein the titanium dioxide optionally contains one or more of tungsten and silicon, preferably silicon.

[0306] 16. The catalyst according to embodiment 14 or 15, wherein in the catalyst, the first coating is at a concentration of 30.51-244.09 g / L (0.5-4 g / L). 3 Preferred concentrations are 61.02-183.07 g / L (1-3 g / L). 3 More preferably 91.53-152.56 g / l (1.5-2.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0307] 17. The catalyst according to embodiment 14 or 15, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the first coating consists of vanadium oxide supported on an oxide material.

[0308] 18. The catalyst according to any one of embodiments 1-17, wherein 0-0.0001% by weight, preferably 0-0.00001% by weight, of the first coating is composed of palladium, more preferably of palladium, platinum and rhodium, and even more preferably of palladium, platinum and rhodium, osmium and iridium.

[0309] 19. The catalyst according to any one of embodiments 1-18, wherein the first platinum group metal component contained in the second coating is one or more of platinum, palladium and rhodium, preferably one or more of platinum and palladium, and more preferably, the first platinum group metal component is platinum or the first platinum group metal component is palladium and platinum.

[0310] 20. A catalyst according to any one of embodiments 1-19, wherein the non-zeolite first oxide material on which the first platinum group metal component contained in the second coating is supported comprises, preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more of a mixed oxide comprising two or more of Al, Zr, Ti, Si and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide.

[0311] 21. The catalyst according to embodiment 20, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite first oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, preferably 70-90% by weight, more preferably 75-85% by weight, of the non-zeolite first oxide material is composed of alumina, and 0-40% by weight, preferably 10-30% by weight, more preferably 15-25% by weight, of the non-zeolite first oxide material is composed of zirconium oxide.

[0312] 22. The catalyst according to embodiment 20, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite first oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, preferably 80-100% by weight, more preferably 85-95% by weight, of the non-zeolite first oxide material is composed of titanium dioxide, and 0-40% by weight, preferably 0-20% by weight, more preferably 5-15% by weight, of the non-zeolite first oxide material is composed of silicon dioxide.

[0313] 23. The catalyst according to any one of embodiments 1-22, wherein the second coating comprises a zeolite material containing one or more of copper and iron.

[0314] 24.If the 1-23-year-old is the head of the house, the old man is the old man. The following companies are: ABW, ACO, AEI, A EL, AEN, AET, AFG, AFI, AFN, AFO, AFR, AFS, AFT, AFV, AFX, AFY, AHT, ANA, APC APD、AST、ASV、ATN、ATO、ATS、ATT、ATV、AVL、AWO、AWW、BCT、BEA、BEC、BIK、B OF、BOG、BOZ、BPH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、-CLO、C ON、CSV、CZP、DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、EPI、ERI 、ESV、ETR、EUO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GOO、HEU 、IFO、IFR、-IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、ITH、*-I TN、ITR、ITT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JSR、JS T、JSW、KFI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR、MAZ 、MEI、MEL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、MTT、 MTW、MVY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI、OS O、OWE、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、RT H、RUT、RWR、RWY、SAF、SAO、SAS、SAT、SAV、SBE、SBN、SBS、SBT、SEW、SFE、SFF、 SFG、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SSY 、STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UEI 、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe mixture of two or more of these materials, and the type of mixture thereof, is preferably selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR; more preferably selected from AEI, GME, CHA, BEA, FAU, and MOR; and even more preferably selected from AEI, CHA, and BEA. The zeolite material contained in the second coating is more preferably of the skeleton type CHA or AEI, and more preferably CHA.

[0315] 25. The catalyst according to any one of embodiments 1-24, wherein the zeolite material contained in the second coating comprises copper, wherein the amount of copper contained in the zeolite material, based on CuO, is preferably 1-10% by weight, more preferably 2-8% by weight, and even more preferably 3-6% by weight, based on the total weight of the zeolite material.

[0316] 26. The catalyst according to embodiment 25, wherein the amount of iron contained in the zeolite material of the second coating is 0-0.01% by weight, preferably 0-0.001% by weight, more preferably 0-0.0001% by weight, based on the total weight of the zeolite material, as calculated as Fe2O3.

[0317] 27. The catalyst according to any one of embodiments 1-26, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the zeolite material of the second coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or more preferably 30:1 to 40:1.

[0318] 28. The catalyst according to any one of embodiments 1-27, wherein the zeolite material contained in the second coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is preferably 0.1-10.0 wt%, more preferably 1.0-7.0 wt%, more preferably 2.5-5.5 wt%, based on the total weight of the zeolite material, and wherein preferably 95-100 wt%, more preferably 98-100 wt%, more preferably 99-100 wt%, the skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0319] 29. A catalyst according to any one of embodiments 1-28, wherein in said catalyst, the second coating is at a concentration of 45.77-305.12 g / L (0.75-5 g / L). 3 Preferred concentrations are 61.02-183.07 g / L (1-3 g / L). 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0320] 30. The catalyst according to any one of embodiments 1-29, wherein the zeolite material contained in the second coating, preferably a zeolite material having a framework type CHA, has an average crystallite size of at least 0.5 micrometers, preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and even more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0321] 31. The catalyst according to any one of embodiments 1-30, wherein the second coating further comprises a metal oxide binder, wherein the metal oxide binder preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of alumina and zirconium oxide, more preferably zirconium oxide, wherein in the catalyst, the second coating is more preferably at a concentration of 1.22-12.20 g / L (0.02-0.2 g / L). 3 More preferably 3.05-9.15 g / l (0.05-0.15 g / in). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The loading includes metal oxide binders.

[0322] 32. The catalyst according to any one of embodiments 1-31, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, of the second coating comprises a first platinum group metal component supported on a non-zeolite first oxide material and a zeolite material comprising one or more of copper and iron, and preferably, a metal oxide binder.

[0323] 33. The catalyst according to any one of embodiments 1-31, wherein the second coating comprises vanadium oxide, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron and antimony.

[0324] 34. The catalyst according to embodiment 33, wherein the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon and zirconium, preferably supported on an oxide material comprising one or more of titanium and silicon, more preferably supported on titanium dioxide and silicon dioxide, and even more preferably supported on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0325] 35. The catalyst according to embodiment 34, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the second coating is composed of a first platinum group metal component supported on a non-zeolite first oxide material and vanadium oxide supported on an oxide material.

[0326] 36. A catalyst according to any one of embodiments 33-35, wherein in said catalyst, the second coating is at a concentration of 30.51-244.09 g / L (0.5-4 g / L). 3 Preferred concentrations are 61.02-183.07 g / L (1-3 g / L). 3 More preferably 91.53-152.56 g / l (1.5-2.5 g / in) 3 The loading of ) includes loaded vanadium oxide, expressed as V2O5.

[0327] 37. A catalyst according to any one of embodiments 1-36, wherein the second coating and optionally the third coating together have a content of 0.035-1.41 g / L (1-40 g / ft) based on platinum group metals. 3 The preferred concentration is 0.071-0.53 g / L (2-15 g / ft). 3 The preferred concentration is 0.11-0.35 g / L (3-10 g / ft). 3 More preferably, it is 0.16-0.32 g / L (4.5-9.0 g / ft). 3More preferably, it is 0.26-0.30 g / L (7.5-8.5 g / ft). 3 The loading of platinum group metal components.

[0328] 38. A catalyst according to any one of embodiments 1-37, wherein the loading of the first non-zeolite oxide material together with an optional second oxide material is 6.10-183.07 g / L (0.1-3 g / L). 3 The preferred concentration is 12.20-122.05 g / L (0.2-2 g / L). 3 More preferably, it is 24.41-91.53 g / l (0.4-1.5 g / in). 3 More preferably, it is 36.61-73.23 g / l (0.6-1.2 g / in). 3 ).

[0329] 39. The catalyst according to any one of embodiments 1-38, wherein the catalyst comprises a flow-through substrate, a first coating and a second coating, wherein the first coating is disposed on the second coating and the second coating is disposed on the inner wall surface.

[0330] 40. The catalyst according to any one of embodiments 1-39, wherein the second coating comprises, preferably, the following components:

[0331] (A) An inlet coating comprising a platinum group metal component supported on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; and

[0332] (B) An export coating comprising a platinum group metal component loaded on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron.

[0333] The inlet coating extends from the inlet end to the outlet end along y1% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0334] The outlet coating extends from the outlet end to the inlet end at y2% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0335] Where y1 is 45-55, preferably 48-50, and y2 is 45-55, preferably 48-50;

[0336] The inlet coating contains a platinum group metal component with a loading of (l1), and the outlet coating contains a platinum group metal component with a loading of (l2), wherein the ratio of (l1):(l2) is 0.2:1 to 0.75:1, preferably 0.3:1 to 0.6:1, and more preferably 0.4:1 to 0.5:1;

[0337] The first platinum group metal component comprises, preferably, the platinum group metal component of the inlet coating and the platinum group metal component of the outlet coating;

[0338] The non-zeolite first oxide material comprises the non-zeolite oxide material of the inlet coating and the non-zeolite oxide material of the outlet coating, preferably composed of the two.

[0339] 41. The catalyst according to embodiment 40, wherein the platinum group metal component contained in the inlet coating of the second coating is one or more of platinum, palladium and rhodium, preferably one or more of platinum and palladium, more preferably platinum, or palladium and platinum.

[0340] 42. The catalyst according to embodiment 40 or 41, wherein the non-zeolite oxide material loaded with the platinum group metal component contained in the inlet coating comprises, preferably, alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more of a mixed oxide comprising two or more of Al, Zr, Ti, Si and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide and silicon dioxide.

[0341] 43. The catalyst according to embodiment 42, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, preferably 70-90% by weight, more preferably 75-85% by weight, of the non-zeolite oxide material is composed of alumina, and 0-40% by weight, preferably 10-30% by weight, more preferably 15-25% by weight, of the non-zeolite oxide material is composed of zirconium oxide.

[0342] 44. The catalyst according to embodiment 42, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, preferably 80-100% by weight, more preferably 85-95% by weight, of the non-zeolite oxide material is composed of titanium dioxide, and 0-40% by weight, preferably 0-20% by weight, more preferably 5-15% by weight, of the non-zeolite oxide material is composed of silicon dioxide.

[0343] 45. The catalyst according to any one of embodiments 40-44, wherein the inlet coating of the second coating comprises a zeolite material containing one or more of copper and iron.

[0344] 46.I am a 40-45-year-old woman who has a 40-45-year-old body. Read more: ABW ACO 、AEI、AEL、AEN、AET、AFG、AFI、AFN、AFO、AFR、AFS、AFT、AFV、AFX、AFY、AHT、A NA、APC、APD、AST、ASV、ATN、ATO、ATS、ATT、ATV、AVL、AWO、AWW、BCT、BEA、BEC 、BIK、BOF、BOG、BOZ、BPH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、- CLO、CON、CSV、CZP、DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、EP I、ERI、ESV、ETR、EUO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GOO HEU、IFO、IFR、-IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、ITH 、*-ITN、ITR、ITT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JSR 、JST、JSW、KFI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR、 MAZ、MEI、MEL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、M TT、MTW、MVY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI 、OSO、OWE、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、 RTH, RUT, RWR, RWY, SAF, SAO, SAS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SF F、SFG、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SS Y、STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UE I、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe mixture of two or more of these materials, and the type of mixture thereof, is preferably selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR; more preferably selected from AEI, GME, CHA, BEA, FAU, and MOR; and even more preferably selected from AEI, CHA, and BEA. The zeolite material contained in the inlet coating is more preferably of the skeleton type CHA or AEI, and more preferably CHA.

[0345] 47. The catalyst according to any one of embodiments 40-46, wherein the zeolite material contained in the inlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material, based on CuO, is preferably 1-10% by weight, more preferably 2-8% by weight, and even more preferably 3-6% by weight, based on the total weight of the zeolite material.

[0346] 48. The catalyst according to embodiment 47, wherein the amount of iron contained in the zeolite material of the inlet coating is 0-0.01% by weight, preferably 0-0.001% by weight, more preferably 0-0.0001% by weight, based on the total weight of the zeolite material, as calculated as Fe2O3.

[0347] 49. A catalyst according to any one of embodiments 40-48, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the zeolite material in the inlet coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or more preferably 30:1 to 40:1.

[0348] 50. The catalyst according to any one of embodiments 40-49, wherein the zeolite material contained in the inlet coating of the second coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is preferably 0.1-10.0 wt%, more preferably 1.0-7.0 wt%, more preferably 2.5-5.5 wt%, based on the total weight of the zeolite material, and wherein preferably 95-100 wt%, more preferably 98-100 wt%, more preferably 99-100 wt%, the skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0349] 51. A catalyst according to any one of embodiments 40-50, wherein in said catalyst, the inlet coating of the second coating is at a concentration of 45.77-305.12 g / L (0.75-5 g / in). 3 Preferred concentrations are 61.02-183.07 g / L (1-3 g / L). 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0350] 52. The catalyst according to any one of embodiments 46-51, wherein the zeolite material contained in the inlet coating of the second coating, preferably a zeolite material having a framework type CHA, has an average crystallite size of at least 0.5 micrometers, preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and even more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0351] 53. The catalyst according to any one of embodiments 40-52, wherein the inlet coating of the second coating further comprises a metal oxide binder, wherein the metal oxide binder preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of alumina and zirconium oxide, more preferably zirconium oxide, wherein in the catalyst, the inlet coating of the second coating more preferably has a concentration of 1.22-12.20 g / L (0.02-0.2 g / in). 3 The preferred concentration is 3.05-9.15 g / L (0.05-0.15 g / L). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The loading includes metal oxide binders.

[0352] 54. The catalyst according to any one of embodiments 40-53, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, of the inlet coating of the second coating consists of a platinum group metal component supported on a non-zeolite oxide material and a zeolite material comprising one or more of copper and iron, preferably a metal oxide binder according to embodiment 53.

[0353] 55. A catalyst according to any one of embodiments 40-54, wherein the inlet coating of the second coating comprises vanadium oxide, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises tungsten, iron and antimony.

[0354] 56. The catalyst according to embodiment 55, wherein the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon and zirconium, preferably supported on an oxide material comprising one or more of titanium and silicon, more preferably supported on titanium dioxide and silicon dioxide, and even more preferably supported on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0355] 57. The catalyst according to embodiment 55 or 56, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the inlet coating of the second coating is composed of a platinum group metal component and vanadium oxide supported on a non-zeolite oxide material.

[0356] 58. A catalyst according to any one of embodiments 55-57, wherein in said catalyst, the inlet coating of the second coating is at a concentration of 30.51-305.12 g / L (0.5-5 g / in). 3 Preferred concentrations are 61.02-244.09 g / L (1-4 g / L). 3 More preferably 122.05-213.58 g / l (2-3.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0357] 59. A catalyst according to any one of embodiments 40-58, wherein the inlet coating of said catalyst is at a concentration of 0.035-0.28 g / L (1-8 g / ft). 3 The preferred concentration is 0.11-0.25 g / L (3-7 g / ft). 3 More preferably 0.14-0.21 g / l (4-6 g / ft) 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

[0358] 60. The catalyst according to any one of embodiments 40-59, wherein the platinum group metal component contained in the outlet coating of the second coating is one or more of platinum, palladium and rhodium, preferably one or more of platinum and palladium, more preferably platinum, or even more preferably palladium and platinum.

[0359] 61. The catalyst according to any one of embodiments 40-60, wherein the non-zeolite oxide material containing platinum group metal components in the outlet coating of the second coating comprises, preferably, one or more of, the following substances: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and a mixture of one or more of Al, Zr, Ti, Si, and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide.

[0360] 62. The catalyst according to embodiment 61, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of alumina and optionally zirconium oxide, wherein 60-100% by weight, preferably 70-90% by weight, more preferably 75-85% by weight, of the non-zeolite oxide material is composed of alumina, and 0-40% by weight, preferably 10-30% by weight, more preferably 15-25% by weight, of the non-zeolite oxide material is composed of zirconium oxide.

[0361] 63. The catalyst according to embodiment 61, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the non-zeolite oxide material is composed of titanium dioxide and optionally silicon dioxide, wherein 60-100% by weight, preferably 80-100% by weight, more preferably 85-95% by weight, of the non-zeolite oxide material is composed of titanium dioxide, and 0-40% by weight, preferably 0-20% by weight, more preferably 5-15% by weight, of the non-zeolite oxide material is composed of silicon dioxide.

[0362] 64. The catalyst according to any one of embodiments 40-63, wherein the outlet coating of the second coating comprises a zeolite material containing one or more of copper and iron.

[0363] 65.If you are 40-64 years old, you will be able to do this. Read more about the company: ABW A CO、AEI、AEL、AEN、AET、AFG、AFI、AFN、AFO、AFR、AFS、AFT、AFV、AFX、AFY、AHT、 ANA, APC, APD, AST, ASV, ATN, ATO, ATS, ATT, ATV, AVL, AWO, AWW, BCT, BEA, BE C、BIK、BOF、BOG、BOZ、BPH、BRE、BSV、CAN、CAS、CDO、CFI、CGF、CGS、CHA、-CHI、 -CLO、CON、CSV、CZP、DAC、DDR、DFO、DFT、DOH、DON、EAB、EDI、EEI、EMT、EON、E PI、ERI、ESV、ETR、EUO、*-EWT、EZT、FAR、FAU、FER、FRA、GIS、GIU、GME、GON、GO O、HEU、IFO、IFR、-IFU、IFW、IFY、IHW、IMF、IRN、IRR、-IRY、ISV、ITE、ITG、IT H、*-ITN、ITR、ITT、-ITV、ITW、IWR、IWS、IWV、IWW、JBW、JNT、JOZ、JRY、JSN、JS R、JST、JSW、KFI、LAU、LEV、LIO、-LIT、LOS、LOV、LTA、LTF、LTJ、LTL、LTN、MAR 、MAZ、MEI、MEL、MEP、MER、MFI、MFS、MON、MOR、MOZ、*MRE、MSE、MSO、MTF、MTN、M TT、MTW、MVY、MWF、MWW、NAB、NAT、NES、NON、NPO、NPT、NSI、OBW、OFF、OKO、OSI 、OSO、OWE、-PAR、PAU、PCR、PHI、PON、POS、PSI、PUN、RHO、-RON、RRO、RSN、RTE、 RTH, RUT, RWR, RWY, SAF, SAO, SAS, SAT, SAV, SBE, SBN, SBS, SBT, SEW, SFE, SF F、SFG、SFH、SFN、SFO、SFS、*SFV、SFW、SGT、SIV、SOD、SOF、SOS、SSF、*-SSO、SS Y、STF、STI、*STO、STT、STW、-SVR、SVV、SZR、TER、THO、TOL、TON、TSC、TUN、UE I、UFI、UOS、UOV、UOZ、USI、UTL、UWY、VET、VFI、VNI、VSV、WEI、-WEN、YUG、ZONThe mixture of two or more of these substances and their respective mixture types are preferably selected from AEI, GME, CHA, MFI, BEA, FAU, and MOR; more preferably selected from AEI, GME, CHA, BEA, FAU, and MOR; and even more preferably selected from AEI, CHA, and BEA. The zeolite material contained in the outlet coating is more preferably of the skeleton type CHA or AEI, and even more preferably CHA.

[0364] 66. The catalyst according to any one of embodiments 40-65, wherein 95-100% by weight, preferably 98-100% by weight, more preferably 99-100% by weight, of the zeolite material in the outlet coating has a framework structure composed of one or more of Si, Al, O, and optionally H and P, wherein in the framework structure, the molar ratio of Si to Al, calculated as SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1, or more preferably 30:1 to 40:1.

[0365] 67. The catalyst according to any one of embodiments 40-66, wherein the zeolite material contained in the outlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material, based on CuO, is preferably 1-10% by weight, more preferably 2-8% by weight, and even more preferably 3-6% by weight, based on the total weight of the zeolite material.

[0366] 68. The catalyst according to embodiment 67, wherein the amount of iron contained in the zeolite material of the outlet coating is 0-0.01% by weight, preferably 0-0.001% by weight, more preferably 0-0.0001% by weight, based on the total weight of the zeolite material.

[0367] 69. The catalyst according to any one of embodiments 40-67, wherein the zeolite material contained in the outlet coating of the second coating comprises iron, wherein the amount of iron contained in the zeolite material, based on Fe2O3, is preferably 0.1-10.0 wt%, more preferably 1.0-7.0 wt%, more preferably 2.5-5.5 wt%, based on the total weight of the zeolite material, and wherein preferably 95-100 wt%, more preferably 98-100 wt%, more preferably 99-100 wt%, the skeletal structure of the zeolite material is composed of one or more of Si, Al, O and optionally H and P, wherein in the skeletal structure, the molar ratio of Si to Al, based on SiO2:Al2O3, is preferably 2:1 to 50:1, more preferably 4:1 to 40:1, more preferably 10:1 to 40:1, more preferably 15:1 to 40:1, more preferably 15:1 to 25:1 or more preferably 30:1 to 40:1.

[0368] 70. A catalyst according to any one of embodiments 40-69, wherein in said catalyst, the outlet coating of the second coating is 45.77-305.12 g / L (0.75-5 g / L). 3 Preferred concentrations are 61.02-183.07 g / L (1-3 g / L). 3 More preferably 97.64-158.66 g / l (1.6-2.6 g / in) 3 The loading includes zeolite materials.

[0369] 71. The catalyst according to any one of embodiments 65-70, wherein the zeolite material contained in the outlet coating of the second coating, preferably a zeolite material having a framework type CHA, has an average crystallite size of at least 0.5 micrometers, preferably 0.5-1.5 micrometers, more preferably 0.6-1.0 micrometers, and even more preferably 0.6-0.8 micrometers as determined by scanning electron microscopy.

[0370] 72. The catalyst according to any one of embodiments 40-71, wherein the outlet coating of the second coating further comprises a metal oxide binder, wherein the metal oxide binder preferably comprises one or more of zirconium oxide, alumina, titanium dioxide, silicon dioxide, and a mixture of two or more of Zr, Al, Ti, and Si, more preferably one or more of alumina and zirconium oxide, more preferably zirconium oxide, wherein in the catalyst, the outlet coating of the second coating more preferably has a concentration of 1.22-12.20 g / L (0.02-0.2 g / in). 3 More preferably 3.05-9.15 g / l (0.05-0.15 g / in). 3 More preferably 4.88-7.32 g / l (0.08-0.12 g / in). 3 The loading includes metal oxide binders.

[0371] 73. The catalyst according to any one of embodiments 40-72, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, of the outlet coating of the second coating is composed of a platinum group metal component supported on a non-zeolite oxide material and a zeolite material comprising one or more of copper and iron, and preferably, a metal oxide binder according to embodiment 72.

[0372] 74. The catalyst according to any one of embodiments 40-73, wherein the outlet coating of the second coating comprises vanadium oxide, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises one or more of tungsten, iron and antimony.

[0373] 75. The catalyst according to embodiment 74, wherein the vanadium oxide is supported on an oxide material comprising one or more of titanium, silicon and zirconium, preferably supported on an oxide material comprising one or more of titanium and silicon, more preferably supported on titanium dioxide and silicon dioxide, and even more preferably supported on titanium dioxide, wherein the titanium dioxide optionally comprises one or more of tungsten and silicon, preferably silicon.

[0374] 76. The catalyst according to any one of embodiments 40-75, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 98-100% by weight, and even more preferably 99-100% by weight, of the outlet coating of the second coating is composed of a platinum group metal component and vanadium oxide supported on a non-zeolite oxide material, wherein the vanadium oxide is preferably one or more of vanadium oxide (V) and vanadium oxide (IV), wherein the vanadium oxide optionally comprises tungsten, iron, and antimony.

[0375] 77. A catalyst according to any one of embodiments 40-76, wherein in said catalyst, the outlet coating of the second coating is 30.51-305.12 g / L (0.5-5 g / in). 3 Preferred concentrations are 61.02-244.09 g / L (1-4 g / L). 3 More preferably 122.05-213.58 g / l (2-3.5 g / in) 3 The loading of ) includes vanadium oxide, expressed as V2O5.

[0376] 78. A catalyst according to any one of embodiments 40-77, wherein the outlet coating of said catalyst is 0.07-1.41 g / L (2-40 g / ft). 3 Preferred concentrations are 0.11-0.71 g / L (3-20 g / ft). 3 More preferably 0.21-0.53 g / l (6-15 g / ft)3 More preferably 0.32-0.42 g / L (9-12 g / ft) 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

[0377] 79. A catalyst according to any one of embodiments 1-39, wherein the catalyst comprises a flow-through substrate, a first coating, a second coating, and a third coating, preferably composed of them.

[0378] Where z is 20-65, preferably 30-60, more preferably 40-55; or

[0379] Where z is 80-100, preferably 95-100, and more preferably 98-100.

[0380] 80. The catalyst according to embodiment 79, wherein the second platinum group metal component contained in the third coating is one or more of platinum, palladium and rhodium, preferably one or more of platinum and palladium, more preferably platinum.

[0381] 81. The catalyst according to embodiment 79 or 80, wherein the second oxide material containing the second platinum group metal component in the third coating comprises, preferably, a substance consisting of: alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more of a mixed oxide comprising two or more of Al, Zr, Ti, Si, and Ce, preferably one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide.

[0382] 82. The catalyst according to embodiment 81, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the second oxide material is composed of alumina and optionally zirconium oxide; wherein 60-100% by weight, preferably 70-90% by weight, more preferably 75-85% by weight, of the second oxide material is composed of alumina, and wherein 0-40% by weight, preferably 10-30% by weight, more preferably 15-25% by weight, of the second oxide material is composed of zirconium oxide.

[0383] 83. The catalyst according to embodiment 81, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the second oxide material is composed of titanium dioxide and optionally silicon dioxide; wherein 60-100% by weight, preferably 80-100% by weight, more preferably 85-95% by weight, of the second oxide material is composed of titanium dioxide, and wherein 0-40% by weight, preferably 0-20% by weight, more preferably 5-15% by weight, of the second oxide material is composed of silicon dioxide.

[0384] 84. The catalyst according to any one of embodiments 79-83, wherein 90-100% by weight, preferably 95-100% by weight, more preferably 99-100% by weight, of the third coating is composed of a second platinum group metal component supported on the second oxide material.

[0385] 85. A catalyst according to any one of embodiments 79-84, wherein in said catalyst, the second coating is at a concentration of 0.018-0.21 g / L (0.5-6 g / ft). 3 Preferred concentrations are 0.026-0.14 g / L (0.75-4 g / ft). 3 More preferably 0.035-0.123 g / l (1-3.5 g / ft) 3 More preferably 0.035-0.07 g / l (1-2 g / ft) 3 ) or more preferably 0.088-0.123 g / l (2.5-3.5 g / ft) 3 The loading of ) includes the first platinum group metal component, expressed as elemental platinum group metals.

[0386] 86. A catalyst according to any one of embodiments 79-85, wherein in said catalyst, the third coating is at a concentration of 0.18-0.71 g / L (5-20 g / ft). 3 Preferred concentrations are 0.28-0.53 g / L (8-15 g / ft). 3 More preferably 0.32-0.49 g / l (9-14 g / ft) 3 More preferably 0.32-0.39 g / l (9-11 g / ft) 3 ) or more preferably 0.42-0.49 g / l (12-14 g / ft) 3 The loading of ) includes a second platinum group metal component, expressed as an elemental platinum group metal.

[0387] 87. A catalyst according to any one of embodiments 79-86, wherein in said catalyst, the second coating is at a concentration of 3.05-91.54 g / L (0.05-1.5 g / L). 3 The preferred concentration is 6.10-61.02 g / L (0.1-1.0 g / L). 3 More preferably 12.20-36.61 g / l (0.2-0.6 g / in). 3 The loading of the non-zeolite first oxide material includes the loading of the first platinum group metal component.

[0388] 88. A catalyst according to any one of embodiments 79-87, wherein in said catalyst, the third coating is at a concentration of 3.05-91.54 g / L (0.05-1.5 g / L). 3The preferred concentration is 6.10-61.02 g / L (0.1-1.0 g / L). 3 More preferably 12.20-36.61 g / l (0.2-0.6 g / in). 3 More preferably 24.41-36.61 g / l (0.4-0.6 g / in). 3 The loading amount includes a second oxide material loaded with a second platinum group metal component.

[0389] 89. The catalyst according to any one of embodiments 79-88, wherein 0-0.001% by weight, preferably 0-0.0001% by weight, more preferably 0.00001% by weight, of the third coating is composed of zeolite material, wherein more preferably the third coating does not contain zeolite material.

[0390] 90. The catalyst according to embodiment 89, wherein the zeolite material comprises one or more of copper and iron.

[0391] 91. The catalyst according to any one of embodiments 79-90, wherein 0-0.001% by weight, preferably 0-0.0001% by weight, more preferably 0.00001% by weight, of the third coating is composed of one or more vanadium oxides, wherein more preferably the third coating is free of vanadium oxides.

[0392] 92. The catalyst according to any one of embodiments 79-91, wherein the third coating comprises, preferably, a diesel oxidation catalyst component.

[0393] 93. The catalyst according to any one of embodiments 1-92, wherein the second coating comprises one or more nitrogen oxide (NOx) reducing components and one or more ammonia oxidation (AMOx) components, preferably composed thereto.

[0394] 94. The catalyst according to any one of embodiments 1-93, wherein the first coating comprises a nitrogen oxide (NOx) reducing component, preferably composed therefrom.

[0395] 95. A catalyst according to any one of embodiments 1-94, wherein the flow-through substrate of said catalyst comprises a ceramic or metallic material.

[0396] 96. A catalyst according to any one of embodiments 1-95, wherein the flow-through substrate of the catalyst comprises a ceramic material, preferably composed of a ceramic material, wherein the ceramic material preferably comprises, more preferably comprises, the following substances: alumina, silicon dioxide, silicates, aluminosilicates, preferably cordierite or mullite, aluminum titanate, silicon carbide, zirconium oxide, magnesium oxide, preferably one or more of spinel and titanium dioxide, more preferably one or more of silicon carbide and cordierite, more preferably cordierite.

[0397] 97. A catalyst according to any one of embodiments 1-95, wherein the flow-through substrate of the catalyst comprises a metallic substance, preferably composed of a metallic substance, wherein the metallic substance preferably comprises oxygen and one or more of iron, chromium and aluminum, preferably composed of the like.

[0398] 98. An exhaust gas treatment system for treating exhaust gas streams exiting a diesel engine, the exhaust gas treatment system having an upstream end for introducing the exhaust gas streams into the exhaust gas treatment system, wherein the exhaust gas treatment system comprises a catalyst according to any one of embodiments 1-97 and one or more of a diesel oxidation catalyst, a selective catalytic reduction catalyst, and a particulate filter.

[0399] 99. The exhaust gas treatment system according to embodiment 98, comprising a diesel oxidation catalyst having a coating disposed on a substrate, a selective catalytic reduction catalyst having a coating disposed on a substrate, and a catalyst according to any one of embodiments 1-97.

[0400] The diesel oxidation catalyst is located downstream of the upstream end of the exhaust gas treatment system, and the selective catalytic reduction catalyst is located downstream of the diesel oxidation catalyst. The catalyst according to any one of embodiments 1-97 is located downstream of the selective catalytic reduction catalyst.

[0401] 100. The waste gas treatment system according to embodiment 98, comprising a selective catalytic reduction catalyst containing a coating disposed on a substrate and a catalyst according to any one of embodiments 1-97.

[0402] The selective catalytic reduction catalyst is located downstream of the upstream end of the waste gas treatment system, and the catalyst according to any one of embodiments 1-97 is located downstream of the selective catalytic reduction catalyst.

[0403] 101. The exhaust gas treatment system according to embodiment 99 or 100 further includes a filter, preferably a particulate filter, more preferably a catalytic particulate filter, wherein the filter is located downstream of the catalyst according to any one of embodiments 1-97.

[0404] 102. An exhaust gas treatment system according to embodiment 98 or 99, wherein the diesel oxidation catalyst comprises a platinum group metal supported on an oxide material.

[0405] 103. A waste gas treatment system according to any one of embodiments 98-102, wherein the selective catalytic reduction catalyst comprises vanadium oxide and one or more zeolite materials comprising one or more of copper and iron.

[0406] 104. An exhaust gas treatment system according to embodiment 98, comprising a catalyst and a filter according to any one of embodiments 1-97, preferably a particulate filter, more preferably a catalytic particulate filter, wherein the catalyst according to any one of embodiments 1-97 is located downstream of an upstream end of the exhaust gas treatment system, wherein the filter is located downstream of the catalyst according to any one of embodiments 1-97, optionally, the exhaust gas treatment system includes a diesel oxidation catalyst located downstream of the catalyst according to any one of embodiments 1-97 and upstream of the filter.

[0407] 105. An exhaust gas treatment system according to any one of embodiments 98-104, further comprising an injector for injecting fluid into the exhaust gas stream exiting the diesel engine, the injector being located upstream of the diesel oxidation catalyst in embodiment 99, or upstream of the selective catalytic reduction catalyst in embodiment 100, or upstream of the catalyst in embodiment 104, and downstream of the upstream end of the exhaust gas treatment system, wherein the fluid is preferably an aqueous urea solution.

[0408] 106. A method for preparing a catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, preferably according to any one of embodiments 1-97, comprising:

[0409] (a) Provide an uncoated flow-through substrate, the substrate including an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the substrate and extending through the substrate.

[0410] (b) Optionally, a slurry comprising a second platinum group metal component and a second oxide material is provided, and the slurry is placed on the inner wall surface of the substrate at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 0-100, and the slurry placed on the substrate is calcined to obtain a third coating placed on the substrate.

[0411] (c) Providing one or more slurries comprising a first platinum group metal component, a non-zeolite first oxide material and water, as well as vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, wherein the one or more slurries are disposed on an inner wall surface, or on an inner wall surface and a third coating, or on a third coating at y% of the axial length of the substrate, wherein y is 95-100, and calcining the one or more slurries disposed on the substrate to obtain a second coating disposed on the substrate;

[0412] (d) Providing a slurry comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, disposing the slurry on a second coating at x% of the substrate axial length from the inlet end to the outlet end, where x is 20 to y, and calcining the slurry disposed on the substrate to obtain a catalyst for NO oxidation, ammonia oxidation, HC oxidation, and selective catalytic reduction of NOx. 107. The method according to embodiment 106, wherein (c) comprises:

[0413] (c.1) A slurry is formed by using a first platinum group metal precursor, preferably a platinum precursor, an aqueous mixture of a non-zeolite first oxide material, and a mixture of zirconium acetate and a zeolite material (preferably having a CHA framework type and containing one or more of copper and iron), or a vanadium oxalate solution, preferably with the addition of oxide materials, and more preferably with the use of a dispersant.

[0414] (c.2) Along y% of the axial length of the substrate from the inlet end to the outlet end, the slurry obtained in (c.1) is placed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating.

[0415] (c.3) Optionally, the slurry obtained in (c.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0416] (c.4) Calcination of the slurry obtained in (c.2) on the substrate in a gaseous atmosphere, or drying the slurry-treated substrate obtained in (c.3), wherein the gaseous atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C.

[0417] 108. The method according to implementation scheme 106, wherein (c) includes:

[0418] (c.1') By ​​mixing a first platinum group metal precursor, preferably a platinum precursor, with an aqueous mixture of a non-zeolite first oxide material, and a mixture of zirconium acetate and a zeolite material (more preferably having a CHA framework type and containing one or more of copper and iron) or a vanadium oxalate solution, more preferably adding an oxide material, and more preferably using a dispersant, two slurries are formed to obtain a first slurry with a platinum group metal component loading (l1) and a second slurry with a platinum group metal component loading (l2);

[0419] (c.2') Along the axial length y1% of the substrate from the inlet end to the outlet end, the first slurry obtained in (c.1') is placed on the inner wall surface, or on the inner wall surface and the surface of the third coating, or on the third coating, where y1 is 48-50;

[0420] (c.3') Along y2% of the axial length of the substrate from the outlet end to the inlet end, the second slurry obtained in (c.1') is placed on the inner wall surface, or on the inner wall surface and the surface of the third coating, or on the third coating, where y2 is 48-50;

[0421] (c.4') Optionally, the slurry obtained in (c.2') and (c.3') and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0422] (c.5') Calcination of the slurry obtained in (c.2') and (c.3') on the substrate, or the dried slurry-treated substrate obtained in (c.4'), wherein the gas atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C.

[0423] 109. The method according to embodiment 107 or 108, wherein, according to (c.3) and (c.4'), drying is carried out in a gaseous atmosphere at a temperature of 90-200°C, preferably 100-190°C.

[0424] 110. The method according to any one of embodiments 107-109, wherein drying is carried out in a gaseous atmosphere at a temperature of 110-180°C according to (c.3) and (c.4').

[0425] 111. The method according to embodiment 109 or 110, wherein the gaseous atmosphere comprises, preferably, one or more of air, lean air, and oxygen, more preferably air.

[0426] 112. The method according to any one of embodiments 107-111, wherein calcination is carried out in a gaseous atmosphere at a temperature of 550-650°C according to (c.4) and (c.5').

[0427] 113. The method according to any one of embodiments 107, 108 and 112, wherein the gaseous atmosphere comprises, preferably, one or more of air, lean air and oxygen, more preferably air.

[0428] 114. The method according to any one of implementation schemes 106-113, wherein (d) includes:

[0429] (d.1) A slurry is formed by mixing a zirconium acetate mixture with a zeolite material (preferably having a CHA framework and containing one or more of copper and iron) or with a vanadium oxalate solution, more preferably by adding an oxide material, and more preferably by using a dispersant;

[0430] (d.2) The slurry is applied to the second coating at x% of the axial length of the substrate from the inlet end to the outlet end, where x is y, or where x is 20-60, preferably 40-60, more preferably 45-55, and even more preferably 48-52.

[0431] (d.3) Optionally, the slurry obtained in (d.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0432] (d.4) Calcination of the slurry obtained in (d.2) on the substrate, or the dried slurry-treated substrate obtained in (d.3) in a gaseous atmosphere, wherein the gaseous atmosphere preferably has a temperature of 300-600°C, more preferably 350-550°C.

[0433] 115. The method according to embodiment 114, wherein, according to (d.3), drying is carried out in a gaseous atmosphere at a temperature of 90-200°C, preferably 100-190°C.

[0434] 116. According to the method of implementation scheme 114 or 115, drying is carried out in a gaseous atmosphere at a temperature of 110-180°C, according to (d.3).

[0435] 117. The method according to embodiment 115 or 116, wherein the gaseous atmosphere comprises, preferably, one or more of air, lean air, and oxygen, more preferably air.

[0436] 118. The method according to any one of embodiments 114-117, wherein, according to (d.4), calcination is carried out in a gaseous atmosphere at a temperature of 400-500°C.

[0437] 119. The method according to embodiment 114 or 118, wherein the gaseous atmosphere comprises, preferably, one or more of air, rare air, and oxygen, more preferably air.

[0438] 120. The method according to any one of implementation schemes 106-119, wherein (b) includes:

[0439] (b.1) A slurry is formed using a second platinum group metal precursor, preferably a platinum precursor and an aqueous mixture of a second oxide material;

[0440] (b.2) Along z% of the axial length of the substrate from the outlet end to the inlet end, the slurry obtained in (b.1) is applied to the inner wall surface of the substrate;

[0441] (b.3) Optionally, the slurry obtained in (b.2) and disposed on the substrate is dried to obtain a dried slurry-treated substrate;

[0442] (b.4) Calcination of the slurry obtained in (b.2) on the substrate, or the dried slurry-treated substrate obtained in (b.3) in a gaseous atmosphere, wherein the gaseous atmosphere preferably has a temperature of 400-800°C, more preferably 450-700°C, and wherein the gaseous atmosphere preferably comprises, more preferably, one or more of air, lean air and oxygen, more preferably air.

[0443] Where z is 20-65, more preferably 30-60, and even more preferably 40-55; or

[0444] Where z is 80-100, more preferably 95-100, and even more preferably 98-100.

[0445] 121. The method according to embodiment 120, wherein, according to (b.3), drying is carried out in a gaseous atmosphere at a temperature of 90-200°C, preferably 100-190°C.

[0446] 122. According to the method of implementation scheme 120 or 121, the drying is carried out in a gaseous atmosphere at a temperature of 110-180°C, according to (b.3).

[0447] 123. The method according to embodiment 121 or 122, wherein the gaseous atmosphere comprises, preferably, one or more of air, rare air, and oxygen, more preferably air.

[0448] 124. The method according to any one of embodiments 120-123, wherein, according to (b.4), calcination is carried out in a gaseous atmosphere at a temperature of 550-650°C, wherein the gaseous atmosphere preferably comprises, more preferably, one or more of air, lean air, and oxygen, more preferably air.

[0449] 125. The method according to any of the embodiments 106-124, wherein y is 98-100, preferably 99-100.

[0450] 126. The method according to any one of embodiments 106-125, wherein one or more of (b), (c) and (d) are performed by wet impregnation or pre-wet impregnation.

[0451] 127. The method according to any one of embodiments 106-126, which comprises (a), (c) and (d) or (a), (b), (c) and (d).

[0452] 128. A catalyst for the selective catalytic reduction of NO, ammonia, HC and NOx, preferably a catalyst for the selective catalytic reduction of NO, ammonia, HC and NOx according to any one of embodiments 1-97, which can be obtained by the method according to any one of embodiments 106-127 or by said method.

[0453] 129. The catalyst according to any one of embodiments 1-97 or embodiment 128 for the selective catalytic reduction of NO, ammonia, HC and NOx is used for the simultaneous selective catalytic reduction of NOx, oxidation of ammonia, oxidation of nitric oxide and oxidation of hydrocarbons.

[0454] 130. A method for the simultaneous selective catalytic reduction of NOx, oxidation of ammonia, oxidation of nitric oxide, and oxidation of hydrocarbons, comprising:

[0455] (1) Provide an airflow containing one or more of NOx, ammonia, nitric oxide and hydrocarbons;

[0456] (2) Contact the gas stream provided in (1) with a catalyst for NO oxidation, ammonia oxidation, HC oxidation and selective catalytic reduction of NOx according to any one of embodiments 1-97.

[0457] The invention is further illustrated by the following second set of embodiments and combinations thereof, derived from the references and inversions shown. This set of embodiments may be combined with the first set of embodiments, as described below. Furthermore, it is explicitly stated that the following set of embodiments is not a set of claims defining the scope of protection, but rather represents a suitable structured portion of the description relating to the general and preferred aspects of the invention.

[0458] 1'. A catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising:

[0459] (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate.

[0460] (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0461] (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron;

[0462] (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material;

[0463] The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 10-80.

[0464] The second coating extends from the inlet end to the outlet end over a length y% of the axial length of the substrate and is disposed on the surface of the third coating and the inner wall, or disposed on the third coating, where y is 10-80.

[0465] The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the inner wall surface and the second coating, wherein x is 95-100.

[0466] 2'. The catalyst according to embodiment 1', wherein x is 98-100, preferably 99-100.

[0467] 3'. The catalyst according to embodiment 1', wherein the second coating is disposed on the inner wall surface of the third coating and the substrate, wherein y is preferably 30-70, more preferably 40-60, and even more preferably 45-55.

[0468] 4'. A catalyst according to any one of embodiments 1' to 3', wherein z is 10-60, preferably 15-40, and more preferably 20-30.

[0469] 5'. A catalyst according to any one of embodiments 1' to 4', wherein x is 98-100, preferably 99-100, wherein the second coating is disposed on the inner wall surface of the third coating and the substrate, wherein y is 30-70, more preferably 40-60, even more preferably 45-55, and wherein z is 10-60, preferably 15-40, even more preferably 20-30.

[0470] 6'. A catalyst according to any one of embodiments 1' to 5', wherein the first coating has the chemical composition of the first coating in the first set of embodiments as defined in any one of embodiments 5-9, 11-15, 17, 18 and 94 of the first set of embodiments.

[0471] 7'. A catalyst according to any one of embodiments 1' to 6', wherein the first coating is at a concentration of 0.5-3.5 g / in 3 Preferred size: 2-3g / in 3 The loading includes zeolite materials.

[0472] 8'. The catalyst according to any one of embodiments 1' to 7', which has a concentration of 1-4 g / in 3 Preferred concentration: 2.5-3.5 g / in 3 The load includes the first coating.

[0473] 9'. A catalyst according to any one of embodiments 1' to 8', wherein the second coating has the chemical composition of the second coating in the first set of embodiments as defined in any one of embodiments 19-28, 30-35 and 93 of the first set of embodiments.

[0474] 10'. A catalyst according to any one of embodiments 1' to 9', wherein the second coating is at a concentration of 1-2.5 g / in 3 The loading includes zeolite materials.

[0475] 11'. A catalyst according to any one of embodiments 1' to 10', wherein the second coating is applied at a concentration of 1-10 g / ft. 3 The loading includes the first platinum group metal component.

[0476] 12'. A catalyst according to any one of embodiments 1' to 11', wherein the second coating is at a concentration of 0.1-1 g / in 3 The loading includes non-zeolite first oxide materials.

[0477] 13'. The catalyst according to any one of embodiments 1' to 12', which has a concentration of 1-3 g / in 3 The load includes a second coating.

[0478] 14'. A catalyst according to any one of embodiments 1' to 13', wherein the third coating has the composition of the third coating in the first set of embodiments as defined in any one of embodiments 80-84 and 89-92 of the first set of embodiments.

[0479] 15'. A catalyst according to any one of embodiments 1' to 14', wherein the third coating is at 5-30 g / ft 3 Preferred concentration: 10-20g / ft 3 The loading includes a second platinum group metal component.

[0480] 16'. A catalyst according to any one of embodiments 1' to 15', wherein the third coating is at a concentration of 0.1-4 g / in 3 Preferred concentration: 0.2-2 g / in 3 More preferably 0.5-1 g / in 3 The loading includes a second oxide material.

[0481] 17'. The catalyst according to any one of embodiments 1' to 16', which has a concentration of 0.1-4 g / in 3 Preferred concentration: 0.2-2 g / in 3 More preferably 0.5-1 g / in 3 The load includes a third coating.

[0482] 18'. The catalyst according to any one of embodiments 1' to 17', wherein the flow filter is a flow filter in the first set of embodiments as defined in any one of embodiments 95-97.

[0483] 19'. A catalyst according to any one of embodiments 1' to 18', comprising a flow-through substrate, a first coating, a second coating, and a third coating.

[0484] In the context of this invention, the term "inner wall surface" should be understood as the "bare" or "blank" surface of the wall, that is, the wall surface in an untreated state, which is composed of the wall material except for any unavoidable impurities that may contaminate the surface.

[0485] Furthermore, the preferred embodiment of the present invention is as follows: Figure 1 Figures a, 1b, and 1c are shown. The invention is further illustrated by the following embodiments, reference examples, and comparative examples. Example

[0486] Reference Example 1: Determination of Dv90 value

[0487] Particle size distribution was determined using a Sympatec HELOS instrument via static light scattering, with the optical concentration of the sample being 5-10%.

[0488] Reference Example 2: Preparation of Cu-CHA Zeolite

[0489] Zeolite materials containing Cu and having a framework structure of type CHA, used in the embodiments herein, were prepared according to the teachings of US8293199B2. In particular, reference is made to Embodiment 2 of the invention, column 15, lines 26-52 of US8293199B2.

[0490] Reference Example 3: Measurement of BET specific surface area

[0491] BET specific surface area is determined using liquid nitrogen according to DIN 66131 or DIN ISO9277.

[0492] Reference Example 4: General Coating Method

[0493] To coat a flow-through substrate with one or more coatings, the substrate is appropriately and vertically immersed in a given portion of slurry to a specific substrate length, where this specific length is equal to the target length of the coating to be applied, and a vacuum is applied. In this manner, the slurry contacts the walls of the substrate. The sample is held in the slurry for a specific time, typically 1-10 seconds. The substrate is then removed from the slurry, and excess slurry is expelled from the substrate by purging with compressed air (in the opposite direction of slurry penetration).

[0494] Reference Example 5: Preparation of Cu-SCR Catalyst

[0495] The zirconium oxyacetate aqueous solution was diluted in water (so that, upon calcination, this results in 3% by weight of ZrO2 in water based on the initial weight of the solution). The amount of zirconium oxyacetate was calculated such that the zirconium oxide loading in the catalyst after calcination was 6.10 g / L (0.1 g / in) based on ZrO2. 3 Cu-CHA zeolite prepared according to Reference Example 2 of this document was added, except that the zeolite was spray-dried. The amount of Cu-CHA was calculated so that the Cu-CHA loading in the calcined catalyst was 170.87 g / L (2.8 g / in). 3 The resulting slurry was then ground until the Dv90 obtained was 10 micrometers, as measured in Reference Example 1 herein.

[0496] The final slurry was then applied to an uncoated, solid honeycomb cordierite substrate (diameter: 26.67 cm (10.5 inches) × length: 15.24 cm (6 inches) cylindrical substrate, with 400 / (2.54) slurry per square centimeter. 2 Each hole, with a wall thickness of 0.1 mm (4 mils), is placed along its entire length. The coated substrate is then dried at 120°C for 10 minutes, then at 160°C for 30 minutes, and finally calcined at 450°C for 30 minutes. The washcoat loading after calcination is 189.17 g / L (3.1 g / in). 3 ).

[0497] Comparative Example 1: Preparation of a catalyst not of this invention

[0498] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt%—platinum coordinated with monoethanolamine (MEA)—and water was added dropwise to alumina (Al2O3 doped with about 20 wt% ZrO2, approximately 80 wt%, with a BET specific surface area of ​​about 200 m²). 2 / g, Dv90 is 125 micrometers, and the total pore volume is 0.325 ml / g, which corresponds to 15.26 g / l (0.25 g / in). 3 The final zirconium-alumina loading in the catalyst was then subjected to initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the oxide support. The final solids content after initial wet impregnation was approximately 78% by weight. Following initial wet impregnation, the resulting mixture was pre-calcined at 590°C for 4 hours to remove any moisture and fix platinum onto the metal oxide support material, resulting in 0.28 g / L (8 g / ft) of platinum. 3The dry platinum content was determined. Subsequently, the pre-calcined Pt-impregnated alumina was prepared into a slurry. First, tartaric acid (5 times the volume of the platinum solution used above) was added to water containing monoethanolamine (MEA) at a ratio of 1 / 10 of the volume of the platinum solution used above. Next, the Pt-impregnated alumina was added to the solution and mixed to form a Pt-containing slurry with a solid content of 40% by weight. The resulting slurry was milled until the Dv90 obtained as measured in Reference Example 1 was 10 micrometers.

[0499] Separately, a zirconium oxyacetate mixture with a solid content of 30 wt% was added to water to produce a mixture with a solid content of about 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading (based on ZrO2) of 7.93 g / L (0.13 g / in). 3 Add and mix Cu-CHA zeolite (3.25 wt% Cu, based on CuO, with a SiO2:Al2O3 molar ratio of 32, corresponding to 158.66 g / l (2.6 g / in) prepared according to Reference Example 2) to it. 3 The final Cu-CHA loading in the catalyst was determined to form a Cu-CHA slurry. The resulting slurry had a solid content of 38% by weight. The particles in the resulting slurry had a Dv90 of 10 micrometers as measured in Reference Example 1. The Pt-containing slurry was added to the Cu-CHA slurry and stirred to form the final slurry. The final slurry was then applied to an uncoated honeycomb cordierite monolithic substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches) cylindrical substrate with 400 / (2.54) particles per square centimeter using the coating method described in Reference Example 4. 2 Each hole, with a wall thickness of 0.1 mm (4 mils), is placed along its entire length. The substrate is then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes (to remove 85-95% moisture), and then calcined at 590°C for 30 minutes. The coating loading after calcination is 182.13 g / L (2.98 g / in). 3 +8g / ft 3 ).

[0500] Example 1: Preparation of the four-way catalyst of the present invention

[0501] Second coating (bottom coating)

[0502] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt%—platinum coordinated with monoethanolamine (MEA)—and water was added dropwise to titanium dioxide (TiO2 (90 wt%)) and 10 wt% SiO2, with a BET specific surface area of ​​200 m². 2 / g, Dv90 is 20 microns, which corresponds to 15.26 g / l (0.25 g / in).3 The final silica-titanium dioxide loading in the catalyst was used for initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the silica-titanium dioxide support. The final solid content after initial wetting was approximately 70% by weight. Subsequently, the Pt-impregnated titanium dioxide was prepared into a slurry. First, tartaric acid (5 times the volume of the platinum solution used above) was added to water containing monoethanolamine (MEA) at a ratio of 1 / 10 of the volume of the platinum solution used above. Next, the Pt-impregnated titanium dioxide was added to the solution and mixed to form a Pt-containing slurry with a solid content of 40% by weight. The resulting slurry was milled until the Dv90 obtained as measured in Reference Example 1 was 10 micrometers.

[0503] Separately, a zirconium oxyacetate mixture with a solid content of 30 wt% was added to water to produce a mixture with a solid content of about 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading (based on ZrO2) of 6.1 g / L (0.1 g / in). 3 Cu-CHA zeolite (5.1 wt% Cu, based on CuO, SiO2:Al2O3 molar ratio of 19) was added and mixed (final CHA loading in the catalyst was 2.15 g / in). 3 The resulting slurry contained particles with a Dv90 of 10 micrometers, as measured in Reference Example 1. The resulting slurry had a solid content of 38% by weight. The Pt-containing slurry was added to the Cu-CHA slurry and stirred to produce the final slurry. The final slurry was then applied to an uncoated, monolithic cordierite substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches), cylindrical substrate, with a density of 400 / (2.54) per square centimeter, using the coating method described in Reference Example 5. 2 A second coating is formed along the entire length of a hole with a wall thickness of 0.1 mm (4 mils). The substrate is then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes (to remove 85-95% moisture), and calcined at 590°C for 30 minutes. The washing coating loading of the second coating after calcination is 152.84 g / L (2.5 g / in). 3 +8g / ft 3 ), including a final platinum loading of 0.28 g / l.

[0504] First coating (top coating)

[0505] A zirconium oxyacetate mixture with a solid content of 30 wt% was added to water to produce a mixture with a solid content of about 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading (based on ZrO2) of 6.1 g / L (0.1 g / in). 3Cu-CHA zeolite (5.1 wt% Cu, based on CuO, SiO2:Al2O3 molar ratio of 19) was added and mixed into the catalyst, corresponding to a final Cu-CHA loading of 57.97 g / L (0.95 g / in3). The resulting slurry had a solids content of 38.5 wt%. The resulting slurry was then applied along the entire length of the second coating using the coating method described in Reference Example 4. The substrate was then dried at 120°C for 15 minutes, then at 160°C for 30 minutes (to remove 85-95% of the moisture), and calcined at 450°C for 30 minutes. The first coating after calcination had a wash coating loading of 64.07 g / L (1.05 g / in3). 3 ).

[0506] Example 2: Preparation of the four-way catalyst of the present invention

[0507] Second coating (bottom coating)

[0508] Inlet coating

[0509] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt%—platinum coordinated with monoethanolamine (MEA)—and water was added dropwise to alumina (Al2O3 doped with about 20 wt% ZrO2, approximately 80 wt%, with a BET specific surface area of ​​about 200 m²). 2 / g, Dv90 is 125 micrometers, and the total pore volume is 0.425 ml / g, which corresponds to 15.26 g / l (0.25 g / in). 3 The final zirconium-alumina loading in the catalyst was used for initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the alumina support. The final solids content after initial wet impregnation was approximately 78% by weight. The resulting mixture was added to an aqueous solution containing tartaric acid (5 times the amount of platinum used above) and monoethanolamine (MEA) at a ratio of 1 / 10 of the volume of the platinum solution used above, resulting in a final solids content of 40% by weight after adding the Pt-impregnated support. The resulting slurry was then milled until a Dv90 of 10 micrometers was achieved.

[0510] Separately, a zirconium oxyacetate mixture (calculated as ZrO2) with a solid content of 30 wt% was added to water to obtain a mixture with a solid content of approximately 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading of 6.1 g / L (0.1 g / in) in the catalyst. 3 Cu-CHA zeolite (5.1 wt% Cu, based on CuO, SiO2:Al2O3 molar ratio of 19) was added and mixed (the final CHA loading in the catalyst was 131.20 g / L (2.15 g / in)). 3The resulting slurry has a solid content of 38% by weight. The particles in the resulting slurry have a Dv90 of 10 micrometers as measured in Reference Example 1. A Pt-containing slurry is added to this Cu-CHA slurry to form a final slurry, which is then stirred. Then, using the coating method described in Reference Example 4, the final slurry is placed on a cylindrical substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches)) with the inlet side facing the outlet side, less than half the length of the substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches), with 400 / (2.54) particles per square centimeter). 2 The coating is applied to a pore with a wall thickness of 0.1 mm (4 mils). The coated substrate is then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes to remove 85-95% of the moisture, and calcined at 590°C for 30 minutes. The coating loading after calcination is 152.74 g / L (2.5 g / in). 3 +5g / ft 3 ), including the final platinum loading in the inlet coating of 0.18 g / l.

[0511] Export coating

[0512] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt%—platinum coordinated with monoethanolamine (MEA)—and water was added dropwise to alumina (Al2O3 doped with about 20 wt% ZrO2, approximately 80 wt%, with a BET specific surface area of ​​about 200 m²). 2 / g, Dv90 is 125 micrometers, and the total pore volume is 0.425 ml / g, which corresponds to 15.26 g / l (0.25 g / in). 3 The final zirconium-alumina loading in the catalyst was used for initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the alumina support. The final solids content after initial wet impregnation was approximately 78% by weight. The resulting mixture was added to an aqueous solution containing tartaric acid (5 times the amount of platinum used above) and monoethanolamine (MEA) at a ratio of 1 / 10 of the volume of the platinum solution used above, resulting in a final solids content of 40% by weight after adding the Pt-impregnated support. The resulting slurry was then milled until a Dv90 of 10 micrometers was achieved.

[0513] Separately, a zirconium oxyacetate mixture with a solid content of 30 wt% was added to water to produce a mixture with a solid content of approximately 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading of 6.1 g / L (0.1 g / in) in the catalyst. 3(Based on ZrO2). Cu-CHA zeolite (5.1 wt% Cu, based on CuO, SiO2:Al2O3 molar ratio of 19) was added and mixed (the final CHA loading in the catalyst was 131.20 g / L (2.15 g / in)). 3 The resulting slurry has a solid content of 38% by weight. The particles in the resulting slurry have a Dv90 of 10 micrometers as measured in Reference Example 1. The Pt-containing slurry was added to the Cu-CHA slurry to form the final slurry, which was then stirred. The final slurry was then applied to a honeycomb cordierite monolithic substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches) cylindrical substrate, at a density of 400 / (2.54) per square centimeter, using the coating method described in Reference Example 4. 2 A single hole (0.1 mm wall thickness, 4 mils) is positioned on the outlet side facing the inlet side, less than half the length of the substrate, thus creating a 5-8 mm gap between the inlet and outlet coatings. The coated substrate is then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes to remove 85-95% of the moisture, and calcined at 590°C for 30 minutes. After calcination, the wash coating loading of the outlet coating is 152.95 g / L (2.5 g / in). 3 +11g / ft 3 This includes a final platinum loading of 0.39 g / L in the outlet coating. The total platinum loading in the catalyst is 0.28 g / L (8 g / ft). 3 ).

[0514] First coating (top coating)

[0515] A slurry for the first coating was prepared according to the slurry for the first coating in Example 1. The resulting slurry was applied to the second coating (inlet and outlet coatings) along the entire length of the substrate using the coating method described in Reference Example 4. The substrate was then dried at 120°C for 15 minutes, then at 160°C for 30 minutes (to remove 85-95% of the moisture), and calcined at 450°C for 30 minutes. The wash coating loading of the first coating after calcination was 64.07 g / L (1.05 g / in). 3 ).

[0516] Example 3.1: Preparation of the four-way catalyst of the present invention

[0517] Third coating (bottom coating at the outlet)

[0518] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt% solids—platinum coordinated with monoethanolamine (MEA)—and water was dropwise added to titanium dioxide (TiO2 (90 wt%)) and 10 wt% SiO2, with a BET specific surface area of ​​200 m².2 / g, Dv90 is 20 microns, which corresponds to 30.51 g / l (0.5 g / in). 3 The final silica-titanium dioxide loading in the catalyst was used for initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the titanium dioxide support. The final solid content after initial wet impregnation was approximately 70% by weight. The resulting mixture was added to an aqueous solution containing tartaric acid (5 times the amount of platinum used above) and monoethanolamine (MEA) in a ratio of 1 / 10 of the volume of the platinum solution used above, so that the final solid content of the slurry after adding the Pt-impregnated support was 40% by weight. The resulting slurry was then milled until Dv90 was 10 micrometers. Then, using the coating method described in Reference Example 4, the resulting slurry was applied to an uncoated honeycomb cordierite monolithic substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches), cylindrical substrate with 400 / (2.54) per square centimeter. 2 A third coating is formed by setting an outlet-side facing inlet-side aperture (0.1 mm wall thickness, 4 mils) on half the length of the substrate. The coated substrate is then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes to remove 85-95% of the moisture, and calcined at 590°C for 30 minutes. The washing coating loading of the third coating in the catalyst after calcination is 30.86 g / L (0.50 g / in). 3 +10g / ft 3 ), including the final platinum loading in the third coating of 0.35 g / l.

[0519] Second coating (intermediate coating)

[0520] Under constant stirring, a mixture of a platinum precursor with a solid content of 17 wt% solids—platinum coordinated with monoethanolamine (MEA)—and water was added dropwise to titanium dioxide (TiO2 (90 wt%)) and 10 wt% SiO2, with a BET specific surface area of ​​200 m². 2 / g, Dv90 is 20 microns, which corresponds to 15.26 g / l (0.25 g / in). 3 The final silica-titanium dioxide loading in the catalyst was used for initial wet impregnation. The amount of liquid added was appropriately calculated to fill the pore volume of the oxide support. The final solid content after initial wet impregnation was approximately 70% by weight. Subsequently, the pre-calcined Pt-impregnated titanium dioxide was prepared into a slurry. First, tartaric acid (5 times the amount of platinum used above) was added to water containing monoethanolamine (MEA) at a ratio of 1 / 10 of the volume of the platinum solution used above. Next, the Pt-impregnated titanium dioxide was added to the solution and mixed to form a Pt-containing slurry with a solid content of 40% by weight. The resulting slurry was milled until the Dv90 obtained as measured in Reference Example 1 was 10 micrometers.

[0521] Separately, a zirconium oxyacetate mixture with a solid content of 30 wt% was added to water to obtain a mixture with a solid content of approximately 3 wt%, wherein the zirconium oxyacetate mixture resulted in a final zirconium oxide loading of 6.1 g / L (0.1 g / in) in the catalyst. 3 (Based on ZrO2). Cu-CHA zeolite (5.1 wt% Cu, based on CuO, SiO2:Al2O3 molar ratio of 19) was added and mixed (the final CHA loading in the catalyst was 131.20 g / L (2.15 g / in)). 3 The resulting slurry has a solid content of 38% by weight. The particles in the resulting slurry have a Dv90 of 10 micrometers as measured in Reference Example 1. A Pt-containing slurry was added to this Cu-CHA slurry and stirred to produce a final slurry. Then, using the coating method described in Reference Example 4, the final slurry was applied from the inlet side of the substrate to the outlet side onto a monolithic honeycomb cordierite substrate (diameter: 26.67 cm (10.5 inches) × length: 7.62 cm (3 inches), cylindrical substrate, at a density of 400 / (2.54) per square centimeter). 2 A third coating was applied along the entire length of the substrate, with a wall thickness of 0.1 mm (4 mils). The substrate was then dried at 120°C for 15 minutes, followed by drying at 160°C for 30 minutes to remove 85-95% of the moisture, and calcined at 590°C for 30 minutes. The washing coating loading of the second coating after calcination was 152.67 g / L (2.5 g / in). 3 +3g / ft 3 This includes a final platinum loading of 0.11 g / L. The total platinum loading in the catalyst is 0.28 g / L (8 g / ft). 3 ).

[0522] First coating (top coating)

[0523] The slurry for the first coating was prepared as in Example 1, and then the resulting slurry was applied along the entire length of the first coating using the coating method described in Reference Example 4. The substrate was then dried at 120°C for 15 minutes, then at 160°C for 30 minutes (to remove 85-95% of the moisture), and calcined at 450°C for 30 minutes. After calcination, the coating loading of the first coating was 64.07 g / L (1.05 g / in). 3 ).

[0524] Example 3.2: Preparation of the four-way catalyst of the present invention

[0525] Third coating (bottom coating at the outlet)

[0526] The slurry for preparing and coating the third coating was prepared as in Example 3.1, except that the final platinum loading was 0.46 g / L (13 g / ft). 3 ).

[0527] Second coating (intermediate coating)

[0528] The slurry for preparing and coating the second coating was prepared as in Example 3.1, except that the final platinum loading was 0.05 g / L (1.5 g / ft). 3 The total platinum loading in the catalyst was 0.28 g / L (8 g / ft). 3 ).

[0529] First coating (top coating)

[0530] The slurry for preparing and coating the first coating is as described in Example 3.1.

[0531] Example 4: Application of the catalysts from Examples 1 to 3.1 and Comparative Example 1—NH3 oxidation / N2O generation

[0532] To test the fresh catalysts of Examples 1 to 3.1 and Comparative Example 1, different temperatures were applied at the catalyst inlet, namely 250, 300, and 350 °C (space velocity: 100,000 hr). -1 The oxidation of NH3 and the formation of N2O were measured under conditions of 515 ppm NH3, 7% H2O, 7% CO2 and 8% O2. The results are listed in Table 1 below.

[0533] Table 1 Test results of fresh catalyst

[0534]

[0535] As can be seen from Table 1, the catalysts of Examples 1 to 3.1 exhibited high ammonia oxidation rates of 94-98% at 300 and 350°C, but slightly lower than that of the catalyst in Comparative Example 1. However, they produced less nitrous oxide (2.5-4.7 times less) compared to the catalyst in Comparative Example 1. Therefore, the catalyst of the present invention allows for a good balance between ammonia conversion and nitrous oxide formation at high temperatures, in a fresh state. These examples demonstrate that the specific composition of the catalyst of the present invention allows for high ammonia oxidation while allowing for a significant reduction in nitrous oxide formation.

[0536] Example 5: Application of the catalysts from Examples 1 to 3.1 and Comparative Example 1—DeNOx / N2O generation

[0537] To test the fresh catalysts of Examples 1 to 3.1 and Comparative Example 1, at the catalyst inlet, at different temperatures, namely 175, 200, 225, 250 and 400 °C (space velocity: 60000 hr)...-1 NOx conversion and N2O formation were measured at 515 ppm NO, with an NH3 to NOx ratio of 1.1, and under conditions of 5% H2O, 5% CO2, and 10% O2. The results are listed in Table 2 below.

[0538] Table 2 Test results of fresh catalyst

[0539]

[0540] As can be seen from Table 2, compared with the NOx conversion obtained by the catalyst of Comparative Example 1 with a single coating containing a mixture of Pt / alumina and Cu-SCR, the catalysts of Examples 1 to 3.1 exhibit improved NOx conversion over a wide temperature range, i.e., 175–400 °C. Furthermore, the catalysts of the embodiments of the present invention also allow for a reduction in nitrous oxide formation. Specifically, the catalyst of Example 1 exhibited a 96% NOx conversion and 71 ppm N₂O formation at 225 °C, the catalyst of Example 2 exhibited a 97% NOx conversion and 45 ppm N₂O formation at 225 °C, and the catalyst of Example 3.1 exhibited a 96% NOx conversion and 50 ppm N₂O formation.

[0541] In contrast, the catalyst of Comparative Example 1 showed a NOx conversion of 95% and N2O production of 181 ppm at the same temperature (2.5-4 times higher than the catalyst of the present invention).

[0542] Therefore, this example demonstrates that, in addition to achieving a good balance between ammonia conversion and nitrous oxide formation under fresh conditions and high temperatures (see Example 4), the catalyst of the present invention also allows for improved NOx conversion while significantly reducing nitrous oxide formation over a wide temperature range. Example 6: Application of the catalysts of Examples 1 and 3.1 and Comparative Example 1—NO2 / NOx

[0543] The NO2 / NOx ratios obtained using the catalysts of Comparative Example 1 and Examples 1 and 3.1 were measured at temperatures of 200–450 °C (space velocity: 100 k / h) in the absence of ammonia. The results are plotted in... Figure 2 From Figure 2 It can be seen that when using the catalyst of Example 1 and the catalyst of Comparative Example 1, the NO oxidation is almost unchanged.

[0544] Example 7: Application of the catalysts from Examples 1 to 3.1 and Comparative Example 1—NH3 oxidation / N2O generation

[0545] For testing purposes, the catalysts of Examples 1 and 3.1, as well as Comparative Example 1, were aged at 550°C for 100 hours. At the catalyst inlet during aging, at different temperatures, namely 300 and 350°C (space velocity: 100,000 h⁻¹), [further details needed]. -1 The oxidation of NH3 and the formation of N2O were measured under conditions of 515 ppm NH3, 7% H2O, 7% CO2 and 8% O2. The results are listed in Table 3 below.

[0546] Table 3 Test results of aging catalyst

[0547]

[0548] As can be seen from Table 3, the catalysts of Examples 1 and 3.1 allow for a good balance between ammonia oxidation and nitrous oxide formation. In particular, the catalyst of Example 1 showed 99% NH3 oxidation and 12 ppm N2O formation at 350°C, while the catalyst of Example 3.1 showed 97% NH3 oxidation and only 7 ppm N2O formation at 350°C.

[0549] In contrast, the catalyst in Comparative Example 1 showed comparable NH3 oxidation of 99% and higher N2O generation of 16 ppm at the same temperature.

[0550] Therefore, this embodiment demonstrates that, even under aging conditions, the catalyst of the present invention allows for a good balance between ammonia conversion and nitrous oxide formation, especially at high temperatures. This also indicates that the catalyst of the present invention is thermally stable.

[0551] Example 8: Application of the catalysts from Example 3.1 and Comparative Example 1—DeNOx / N2O generation

[0552] For testing purposes, the catalysts of Example 3.1 and Comparative Example 1 were aged at 550°C for 100 hours. At the inlet of the aging catalyst, at different temperatures, namely 200, 225, 250, and 400°C (space velocity: 60000hr), [further details needed]. -1 515ppm NO, NH3 to NOx ratio of 1.1, 5% H2O, 5% CO2 and 10% O 2 NOx conversion and N2O generation were measured. The results are listed in Table 4 below.

[0553] Table 4 Test results of aging catalyst

[0554]

[0555] As can be seen from Table 4, compared with the catalyst of Comparative Example 1, the catalyst of Example 3.1 exhibits improved NOx conversion and reduced N2O formation over a wide temperature range of 200-400°C. Therefore, this example demonstrates that the catalyst of the present invention allows for a good balance between DeNOx and nitrous oxide even under aging conditions. This also indicates that the catalyst of the present invention is thermally stable.

[0556] Example 9: Preparation of the catalyst of the present invention

[0557] The catalyst of Example 9 was prepared according to the catalyst of Example 1, except that the first coating was disposed on half the length of the first coating from the inlet end to the outlet end, and the loading of the first coating after calcination was 91.53 g / L (1.5 g / in). 3 ), including 1.43g / in 3 The final Cu-CHA loading was 0.07 g / in. 3 The final zirconium oxide loading.

[0558] Example 10: Preparation of the catalyst of the present invention

[0559] The catalyst of Example 10 was prepared according to the catalyst of Example 3.1, except that the first coating was disposed on half the length of the first coating from the inlet end to the outlet end, and the loading of the first coating after calcination was 91.54 g / L (1.5 g / in). 3 ), including 1.43g / in 3 The final Cu-CHA loading was 0.07 g / in. 3 The final zirconium oxide loading.

[0560] Example 11: Application of the catalysts from Examples 1, 3.1, 9, and 10, and the catalyst from Comparative Example 1—NH3 oxidation / N2O generation

[0561] To test the fresh catalysts of Examples 1, 3.1, 9, and 10, as well as Comparative Example 1, at the catalyst inlet, at different temperatures, namely 250, 300, and 350 °C (space velocity: 100,000 hr)... -1 The oxidation of NH3 and the formation of N2O were measured under conditions of 515 ppm NH3, 7% H2O, 7% CO2, and 8% O2. The results are shown in... Figure 3 and 4 middle.

[0562] from Figure 3 and 4As can be seen, the catalysts of Examples 1, 3.1, 9, and 10 exhibited high ammonia oxidation rates of 94-98% at 300 and 350°C, but slightly lower than those obtained using the catalyst of Comparative Example 1. However, they produced less nitrous oxide compared to the catalyst of Comparative Example 1. Therefore, the catalysts of the present invention allow for a good balance between ammonia conversion and nitrous oxide formation at high temperatures in a fresh state. These examples demonstrate that the specific composition of the catalysts of the present invention allows for good ammonia oxidation while allowing for a significant reduction in nitrous oxide formation.

[0563] Example 12: Application of the catalysts in Examples 1, 3.1, 9 and 10 and Comparative Example 1—DeNOx / N2O generation

[0564] To test the fresh catalysts of Examples 1, 3.1, 9, and 10, as well as Comparative Example 1, at the catalyst inlet, at different temperatures, namely 175, 200, 225, 250, and 400 °C (space velocity: 60,000 hr),... -1 NOx conversion and N2O formation were measured under conditions of 515 ppm NO, an NH3 to NOx ratio of 1.1, 5% H2O, 5% CO2, and 10% O2. The results are shown in... Figure 5 and 6 middle.

[0565] from Figure 5 and 6As can be seen, compared with the NOx conversion obtained by the catalyst of Comparative Example 1 with a single coating containing a mixture of Pt / alumina and Cu-SCR, the catalysts of Examples 3.1, 9, and 10 exhibit improved NOx conversion over a wide temperature range, i.e., 175-400°C. Furthermore, the catalysts of the embodiments of the present invention also allow for a reduction in nitrous oxide formation. Specifically, the catalyst of Example 1 exhibited a 96% NOx conversion and 71 ppm N2O formation at 225°C; the catalyst of Example 9 (with a second coating only on half the substrate length at the inlet side) exhibited a 94% NOx conversion and 43 ppm N2O formation at 225°C; the catalyst of Example 3.1 exhibited a 96% NOx conversion and 50 ppm N2O formation at 225°C; and the catalyst of Example 10 (with a second coating only on half the substrate length at the inlet side) exhibited a 96% NOx conversion and 22 ppm N2O formation. In contrast, the catalyst of Comparative Example 1 exhibited a 95% NOx conversion and 181 ppm N2O formation at the same temperature. Therefore, this example demonstrates that the catalyst of the present invention allows for improved NOx conversion over a wide temperature range while allowing for a significant reduction in nitrogen formation. Furthermore, this example shows that when only half of the first coating is covered, the second coating of the catalyst of the present invention allows for even greater reduction in nitrous oxide formation.

[0566] Example 13: Preparation of the waste gas treatment system of the present invention

[0567] The exhaust gas treatment system of the present invention was prepared by combining the catalyst of Reference Example 5 (“Cu-SCR catalyst”) and the catalyst of Example 3.1 (“Multi-effect catalyst (MFC)”), wherein the catalyst of Example 3.1 is located downstream of the catalyst of Reference Example 5.

[0568] Example 14: Testing of the Exhaust Gas Treatment System of Example 13—DeNOx / N2O

[0569] Tests were conducted on a 13L Euro VI engine under instantaneous WHTC conditions, with an average temperature of approximately 250°C (SCR). in (The exhaust gas mass is 200-2000 kg / hr, the ammonia to NOx ratio is 0:1, H2O is 1-10%, CO2 is 1-10%, and O2 is 6-20%), and the ENOx level is approximately 10 g NOx / kWh. The amounts of DeNOx and N2O were measured at the MFC outlet with different ANR (ammonia to NOx ratios). The results are listed in Table 1 below.

[0570] Table 1

[0571]

[0572]

[0573] Upstream Cu-SCR increases the DeNOx activity in the exhaust gas treatment system because it increases the amount of SCR material in the system. Therefore, 75-91% DeNOx was observed at the outlet of the MFC of this invention, while exhibiting low N2O formation. Brief description of the attached diagram:

[0575] Figure 1 a:( Figure 1 The top of the image shows a schematic diagram of the multi-effect catalyst of the present invention. Figure 1 A multi-effect catalyst 1 of the present invention is depicted, the catalyst comprising a flow-through substrate 2 including an inlet end 3, an outlet end 4, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels (not shown) defined by the inner wall of the flow-through substrate and extending through the substrate. Furthermore, the catalyst 1 includes a second coating 5 disposed on the inner wall surface of the substrate 2 along its entire length, and a first coating 6 disposed on the second coating 5 along its entire length. Alternatively, the first coating 6 may be disposed on the second coating along approximately half the length of the substrate 2 from the inlet end to the outlet end. This alternative is not described in [the original text]. Figure 1 As shown in a.

[0576] Figure 1 b:( Figure 1 The middle part shows a description of the multi-effect catalyst of the present invention. Figure 1 b depicts the multi-effect catalyst 11 of the present invention, the catalyst comprising a flow-through substrate 2 including an inlet end 3, an outlet end 4, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels (not shown) defined by the inner wall of the flow-through substrate and extending through the substrate. The catalyst 11 includes a second coating comprising an inlet coating 15a extending from the inlet end to the outlet end of the substrate 2 over half the length of the substrate 2 and an outlet coating 15b extending from the outlet end to the inlet end of the substrate 2 over the other half the length of the substrate 2. The second coating (15a+15b) is disposed on the inner wall surface of the substrate 2. Furthermore, the catalyst 11 includes a first coating 16 disposed on the second coating 5 over the entire length of the substrate 2.

[0577] Figure 1 c:( Figure 1 The bottom of the image shows a description of the multi-effect catalyst of the present invention. Figure 1c depicts a multi-effect catalyst 21 of the present invention, the catalyst comprising a flow-through substrate 2 including an inlet end 3, an outlet end 4, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels (not shown) defined by an inner wall of the flow-through substrate and extending through the substrate. The catalyst 21 includes a third coating 27 disposed on the inner wall surface of the substrate 2 and disposed over approximately half the length of the substrate 2 from the outlet end to the inlet end. Furthermore, the catalyst 21 includes a second coating 25 disposed on the inner wall surface of the substrate 2 and the third coating, the coating extending over the entire length of the substrate 2. Finally, the catalyst 21 further includes a first coating 26 disposed on the second coating over the entire length of the substrate 2. Alternatively, the first coating 26 may be disposed on the second coating over approximately half the length of the substrate 2 from the inlet end to the outlet end. This alternative is not described in Figure 1 As shown in c.

[0578] Figure 2 The figures show the NO2 / NOx ratios obtained using the catalysts of Comparative Example 1 and Examples 1 and 3 at temperatures of 200-450°C in the absence of ammonia.

[0579] Figure 3 The figures show the percentage of NH3 oxidation obtained when using the fresh catalysts of Examples 1, 3.1, 9, and 10, and Comparative Example 1, at different temperatures, namely 250, 300, and 350 °C. Conditions: Space velocity: 100,000 hr -1 515ppm NH3, 7% H2O, 7% CO2 and 8% O2.

[0580] Figure 4 The figures show the N₂O production in ppm obtained when using the fresh catalysts of Examples 1, 3.1, 9, and 10, and Comparative Example 1, at different temperatures, namely 250, 300, and 350 °C. Conditions: Space velocity: 100,000 hr -1 515ppm NH3, 7% H2O, 7% CO2 and 8% O2.

[0581] Figure 5 The figures show the NOx conversion, in percentage, obtained when using the fresh catalysts of Examples 1, 3.1, 9, and 10, and Comparative Example 1, at different temperatures: 175, 200, 225, 250, and 400 °C. Conditions: Space velocity: 60,000 hr -1 515ppm NO, NH3 to NOx ratio of 1.1, 5% H2O, 5% CO2 and 10% O2.

[0582] Figure 6The table shows the N₂O production in ppm obtained at different temperatures, namely 175, 200, 225, 250, and 400 °C, using the fresh catalysts of Examples 1, 3.1, 9, and 10, and Comparative Example 1: space velocity: 60000 hr. -1 515ppm NO, NH3 to NOx ratio of 1.1, 5% H2O, 5% CO2 and 10% O2.

[0583] Figure 7 The diagram shows a schematic representation of the catalyst of the present invention. Specifically, the catalyst 100 includes a substrate 101, such as a flow-through substrate, a coating 102—the third coating II of the present invention according to II., a coating 103—the second coating of the present invention according to II., and a coating 104—the first coating of the present invention according to II. The composition of these coatings is as defined above.

[0584] References

[0585] -US2015 / 0037233A

[0586] -WO2015 / 189680A

[0587] -US2016 / 0367973A

[0588] -US2016 / 0367974A

Claims

1. A catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising: (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate. (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material; The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 20-100. The second coating extends from the inlet end to the outlet end along the axial length y% of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating, where y is 95-100. The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the second coating, where x is 20 to y.

2. The catalyst according to claim 1, wherein y is 95-100 and x is y; or wherein y is 95-100 and x is 20-60.

3. The catalyst according to claim 1, wherein y is 98-100 and x is y; or wherein y is 98-100 and x is 40-60.

4. The catalyst according to claim 1, wherein the zeolite material contained in the first coating has a framework type selected from AEI, GME, CHA, MFI, BEA, FAU, MOR, a mixture of two or more of them, or a mixture of two or more of them.

5. The catalyst according to claim 2, wherein the zeolite material contained in the first coating is selected from AEI, CHA, BEA, a mixture of two or more thereof, or a mixture of two or more thereof.

6. The catalyst of claim 3, wherein the zeolite material contained in the first coating has a framework type of CHA or AEI.

7. The catalyst of claim 4, wherein the zeolite material contained in the first coating has a framework type CHA.

8. The catalyst according to any one of claims 1-7, wherein the zeolite material contained in the first coating comprises copper, wherein the amount of copper contained in the zeolite material is 1-10% by weight, based on CuO and the total weight of the zeolite material.

9. The catalyst of claim 8, wherein the zeolite material contained in the first coating comprises copper, wherein the amount of copper contained in the zeolite material is 2-8% by weight, based on CuO, and according to the total weight of the zeolite material.

10. The catalyst according to any one of claims 1-7, wherein the first platinum group metal component contained in the second coating is one or more of platinum, palladium, and rhodium; The non-zeolite first oxide material on which the first platinum group metal component contained in the second coating is loaded includes aluminum oxide, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and one or more mixed oxides containing two or more of Al, Zr, Ti, Si and Ce.

11. The catalyst of claim 10, wherein the first platinum group metal component contained in the second coating is one or more of platinum and palladium; The non-zeolite first oxide material on which the first platinum group metal component contained in the second coating is loaded includes one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide.

12. The catalyst according to any one of claims 1-7, wherein the zeolite material contained in the second coating has a framework type selected from AEI, GME, CHA, MFI, BEA, FAU, MOR, a mixture of two or more of them, or a mixture of two or more of them.

13. The catalyst according to any one of claims 1-7, wherein the zeolite material contained in the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 1-10% by weight, based on CuO and the total weight of the zeolite material.

14. The catalyst of claim 13, wherein the zeolite material contained in the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 2-8% by weight, based on CuO, and according to the total weight of the zeolite material.

15. The catalyst according to any one of claims 1-7, wherein the second coating and the third coating together have a concentration of 0.035-1.41 g / L (1-40 g / ft). 3 The loading of platinum group metal components, expressed as elemental platinum group metals.

16. The catalyst according to claim 15, wherein the second and third coatings together have a concentration of 0.071-0.53 g / L (2-15 g / ft). 3 The loading of platinum group metal components, expressed as elemental platinum group metals.

17. The catalyst according to any one of claims 1-7, wherein the second coating comprises: (A) An inlet coating comprising a platinum group metal component supported on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; and (B) An export coating comprising a platinum group metal component loaded on a non-zeolite oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron. The inlet coating extends from the inlet end to the outlet end along y1% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating. The outlet coating extends from the outlet end to the inlet end at y2% of the axial length of the substrate and is disposed on the inner wall surface, or on the inner wall surface and the third coating, or on the third coating. Where y1 is 45-55 and y2 is 45-55; The inlet coating contains a platinum group metal component with a loading of (l1), and the outlet coating contains a platinum group metal component with a loading of (l2), wherein the ratio of (l1):(l2) is 0.2:1 to 0.75:1; The first platinum group metal component includes the platinum group metal component of the inlet coating and the platinum group metal component of the outlet coating; The non-zeolite first oxide material includes the non-zeolite oxide material of the inlet coating and the non-zeolite oxide material of the outlet coating.

18. The catalyst according to claim 17, wherein the ratio of (l1):(l2) is from 0.3:1 to 0.6:

1.

19. The catalyst of claim 17, wherein the platinum group metal component contained in the inlet coating of the second coating is one or more of platinum, palladium, and rhodium; The non-zeolite oxide material loaded with the platinum group metal component contained in the inlet coating includes one or more of alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and mixed oxides containing two or more of Al, Zr, Ti, Si, and Ce; and / or In the catalyst, the inlet coating is at a concentration of 0.035-0.28 g / L (1-8 g / ft). 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

20. The catalyst of claim 18, wherein the platinum group metal component contained in the inlet coating of the second coating is one or more of platinum and palladium; The non-zeolite oxide material loaded with the platinum group metal component contained in the inlet coating includes one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide; and / or In the catalyst, the inlet coating is at a concentration of 0.035-0.28 g / L (1-8 g / ft). 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

21. The catalyst of claim 17, wherein the zeolite material contained in the inlet coating of the second coating has a framework type selected from AEI, GME, CHA, MFI, BEA, FAU, MOR, a mixture of two or more of them, and a mixture of two or more of them.

22. The catalyst of claim 18, wherein the zeolite material contained in the inlet coating has a framework type of CHA or AEI.

23. The catalyst of claim 20, wherein the zeolite material contained in the inlet coating has a framework type CHA.

24. The catalyst of claim 17, wherein the zeolite material contained in the inlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 1-10% by weight, based on CuO and the total weight of the zeolite material.

25. The catalyst of claim 24, wherein the zeolite material contained in the inlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 2-8% by weight, based on CuO, and according to the total weight of the zeolite material.

26. The catalyst of claim 17, wherein the platinum group metal component contained in the outlet coating of the second coating is one or more of platinum, palladium, and rhodium; The non-zeolite oxide material containing platinum group metal components in the outlet coating loaded with the second coating includes one or more of alumina, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and mixed oxides containing one or more of Al, Zr, Ti, Si, and Ce; and / or In the catalyst, the outlet coating is 0.07-1.41 g / L (2-40 g / ft). 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

27. The catalyst of claim 18, wherein the platinum group metal component contained in the outlet coating of the second coating is one or more of platinum and palladium; The non-zeolite oxide material containing platinum group metal components in the outlet coating loaded with the second coating includes one or more of alumina, zirconium oxide, titanium dioxide, and silicon dioxide; and / or In the catalyst, the outlet coating is 0.07-1.41 g / L (2-40 g / ft). 3 The loading of ) includes platinum group metal components, expressed as elemental platinum group metals.

28. The catalyst of claim 17, wherein the zeolite material contained in the outlet coating of the second coating has a framework type selected from AEI, GME, CHA, MFI, BEA, FAU, MOR, a mixture of two or more of them, and a mixture of two or more of them.

29. The catalyst of claim 18, wherein the zeolite material contained in the outlet coating has a framework type of CHA or AEI.

30. The catalyst of claim 20, wherein the zeolite material contained in the outlet coating has a framework type CHA.

31. The catalyst of claim 17, wherein the zeolite material contained in the outlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 1-10% by weight, based on CuO, and according to the total weight of the zeolite material.

32. The catalyst of claim 31, wherein the zeolite material contained in the outlet coating of the second coating comprises copper, wherein the amount of copper contained in the zeolite material is 2-8% by weight, based on CuO, and according to the total weight of the zeolite material.

33. The catalyst according to any one of claims 1-7, Where z is 20-65; or Where z is 80-100.

34. The catalyst according to claim 33, Where z is 30-60; or Where z is 95-100.

35. The catalyst of claim 33, wherein the second platinum group metal component contained in the third coating is one or more of platinum, palladium, and rhodium; The second oxide material in the third coating, which is loaded with a second platinum group metal component, includes one or more of aluminum oxide, zirconium oxide, titanium dioxide, silicon dioxide, cerium dioxide, and mixed oxides containing two or more of Al, Zr, Ti, Si, and Ce.

36. The catalyst according to claim 35, wherein the second platinum group metal component contained in the third coating is platinum; The second oxide material in the third coating, which is loaded with a second platinum group metal component, includes one or more of aluminum oxide, zirconium oxide, titanium dioxide, and silicon dioxide.

37. An exhaust gas treatment system for treating exhaust gas streams exiting a diesel engine, the exhaust gas treatment system having an upstream end for introducing the exhaust gas streams into the exhaust gas treatment system, wherein the exhaust gas treatment system comprises a catalyst according to any one of claims 1-36, and one or more of a diesel oxidation catalyst, a selective catalytic reduction catalyst, and a particulate filter.

38. A method for preparing a catalyst according to any one of claims 1-36 for NO oxidation, ammonia oxidation, HC oxidation and selective catalytic reduction of NOx, comprising: (a) Provide an uncoated flow-through substrate, the substrate including an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the substrate and extending through the substrate. (b) A slurry comprising a second platinum group metal component and a second oxide material is provided, and the slurry is disposed on the inner wall surface of the substrate at z% of the axial length of the substrate from the outlet end to the inlet end, wherein z is 0-100, and the slurry disposed on the substrate is calcined to obtain a third coating disposed on the substrate. (c) Providing one or more slurries comprising a first platinum group metal component, a non-zeolite first oxide material and water, as well as vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, wherein the one or more slurries are disposed on an inner wall surface, or on an inner wall surface and a third coating, or on a third coating at y% of the axial length of the substrate, wherein y is 95-100, and calcining the one or more slurries disposed on the substrate to obtain a second coating disposed on the substrate; (d) A slurry comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron, and a solvent, is provided on a second coating at x% of the substrate axial length from the inlet end to the outlet end, wherein x is 20 to y, and the slurry disposed on the substrate is calcined to obtain a catalyst for NO oxidation, ammonia oxidation, HC oxidation and selective catalytic reduction of NOx.

39. A catalyst for the selective catalytic reduction of NO, ammonia, HC, and NOx, comprising: (i) A flow-through substrate, comprising an inlet end, an outlet end, an axial length of the substrate extending from the inlet end to the outlet end, and a plurality of channels defined by the inner wall of the flow-through substrate and extending through the substrate. (ii) A first coating comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; (iii) A second coating comprising a first platinum group metal component loaded on a non-zeolite first oxide material, and further comprising vanadium oxide and one or more zeolite materials comprising one or more of copper and iron; (iv) A third coating comprising a second platinum group metal component loaded on a second oxide material; The third coating is disposed on the inner wall surface and is disposed below the second coating at z% of the axial length of the substrate from the outlet end to the inlet end, where z is 10-80. The second coating extends from the inlet end to the outlet end along the axial length y% of the substrate and is disposed on the surface of the third coating and the inner wall, or disposed on the third coating, where y is 10-80. The first coating extends from the inlet end to the outlet end at x% of the axial length of the substrate and is disposed on the inner wall surface and the second coating, where x is 95-100.

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