51results about How to "Reduce the proportion of micropores" patented technology

The present invention relates to a method for selective hydrogenation through cracking of a C5-C9 distillate. According to the method, the catalyst comprises an alumina carrier having a macroporous structure and metal active components comprising nickel and tungsten and supported on the carrier, the nickel oxide content is 12-22 wt% based on the total weight of the catalyst, the tungsten oxide is 1.5-8 wt% based on the total weight of the catalyst, and the hydrogenation reaction process conditions are that the reaction inlet temperature is 40-55 DEG C, the reaction pressure is 2.0-3.5 MPa, the hydrogen oil volume ratio is 60-150, and the liquid volume space velocity is 3.0-5.5 h<-1>. According to the present invention, the catalyst has characteristics of good glue capacity, strong arsenic resistance, strong sulfur resistance, strong coking inhibition and low temperature activity; and the method provides strong adaptability for the cracking gasoline raw materials having different arsenic contents and different sulfur contents.

The invention discloses a catalyst for hydrogen desulfurization of catalytic cracking gasoline and a preparation method of the catalyst. The catalyst comprises the following components based on mass of oxides: 78.0-94.0wt% of an alumina supporter of a macroporous structure, 2.0-10.5wt% of an active ingredient cobalt oxide and 2.5-15.0wt% of molybdenum oxide, wherein the supporter takes chitosan as a pore-enlarging agent. The hydrogen desulfurization catalyst is low in octane loss and high in desulfurization rate.

The invention discloses a lithium-sulfur battery positive electrode material containing a three-dimensional interpenetrating composite carbon material and a preparation method thereof, a positive electrode plate containing the lithium-sulfur battery positive electrode material, and a lithium-sulfur battery. The composite carbon material has a three-dimensional interpenetrating network structure and is formed from carbon nanotubes and ZIF-67 derived hierarchical porous carbon polyhedrons by interpenetrating. ZIF-67 is grown on the surface of activated carbon nanotubes used as a framework, and the ZIF-67 is carbonized into hierarchical porous carbon polyhedrons through high-temperature sintering. The preparation method of the lithium-sulfur battery positive electrode active material comprises the following steps: weighing the composite carbon material and elemental sulfur according to a mass ratio of 1: 4; uniformly dispersing the composite carbon material and the elemental sulfur in a CS2 solution; carrying out stirring until the solvent is completely volatilized; and infiltrating the elemental sulfur in the mixture into a carbon structure by using a melting method. The positive electrode plate is composed of the positive electrode active material, superconducting carbon and a binder in a mass ratio of 8: 1: 1. The lithium-sulfur battery is mainly composed of the positive electrode plate, a diaphragm, an electrolyte and a lithium metal negative electrode.

The invention discloses a method for hydrogenation and arsenic removal of distillate oil. The active centers of a catalyst are nickel and molybdenum; an alumina carrier with a macroporous structure is used as a catalyst carrier and accounts for 70.0 to 96.0 wt%; the active component nickel oxide accounts for 2.0 to 20.0 wt%; and the active component nickel oxide accounts for 2.0 to 10.0 wt%. A fixed-bed reactor is used in a reaction. Process conditions are that reaction temperature is 120 to 220 DEG C; reaction pressure is 1.0 to 4.0 MPa; a hydrogen-oil volume ratio is 100-300: 1; and volume space velocity is 1.0 to 10.0 / h. The method has the following advantages: reaction conditions are mild; raw materials are widely available; the arsenic removal rate of a product is high; and the catalyst has long-period reaction activity, good stability and a long operation period.

The invention relates to a catalyst for isobutene oligomerization and a preparation method thereof. The catalyst is composed of the following components in terms of oxide mass: 80.0-97.0wt% of a composite carrier containing zinc oxide-alumina, 4.0-15.0wt% of active component iron sulfate, and 1.0-6.0wt% of nickel sulfate. The catalyst has high oligomerization activity, the dimer selectivity is high, the trimer selectivity is low, and the catalyst operation cycle is long.

The invention discloses a catalyst for C5 petroleum resin hydrogenation and a preparation method thereof. The catalyst comprises the following components by mass: 78.0-96.0wt% of a composite carrier containing zinc oxide-alumina, 1.0-8.0wt% of an active component, 1.0-15.0wt% of nickel phosphide, and 0.1-2.5wt% of lanthanum oxide. C5 petroleum resin has high hydrogenation activity and good activity stability, the catalyst active center loss rate is low, and the operation period is long.

The invention discloses a hydrogenating and arsenic removing method of naphtha. A catalyst used by the method comprises, by the mass of oxide, 72.0-90.0wt% of composite support containing zinc oxide-aluminum oxide, 6.0-16.0wt% active component nickel oxide, 2.0-6.0wt% of molybdenum oxide and 2.0-6.0wt% of tungsten oxide. The method is mild in reaction condition, wide in raw material application range, high in product arsenic removing, good in long-period reaction activity stability and long in operation period.

The invention discloses an olefin oligomerization catalyst and a preparation method thereof. The catalyst is prepared from the following ingredients through being metered by the mass of oxides: 81.0 to 96.0 weight percent of aluminum oxide carriers with macroporous structures (carriers use chitosan as pore-enlarging agents), 2.5 to 11.5 weight percent of active ingredients of ferric sulfate and 1.5 to 7.5 weight percent of nickel sulfate. The olefin oligomerization catalyst has the advantages that the oligomerization activity is high; the dioolymer selectivity is high; the trimer selectivity is low; the operation period of the catalyst is long.

The invention discloses a composite carrier containing zinc oxide-aluminum oxide and a preparation method thereof. The composite carrier contains zinc oxide containing zinc-aluminum spinel, aluminum oxide, auxiliary component phosphor, potassium and magnesium. The composite carrier is characterized by uniformly dispersed zinc aluminum and high specific surface area and can be used as a carrier for FCC catalyst sulfur-reducing auxiliary agent and FCC hydrogen desulfurization or hydrogenation catalyst.

The invention discloses a catalyst for hydrogen desulfurization of catalytic cracking gasoline and a preparation method of the catalyst. The catalyst comprises the following components based on mass of oxides: 78.0-94.0wt% of an alumina supporter of a macroporous structure, 2.0-10.5wt% of an active ingredient cobalt oxide and 2.5-15.0wt% of molybdenum oxide, wherein the supporter takes chitosan as a pore-enlarging agent. The hydrogen desulfurization catalyst is low in octane loss and high in desulfurization rate.

The invention discloses a catalyst for desulfurizing transforming of gasoline. A carrier of a hydrogenating and desulfurizing transforming catalyst is a zinc oxide-aluminum oxide composite carrier; active components comprise cobalt oxide, nickel oxide and molybdenum oxide. The composite carrier has the advantages that the zinc and aluminum are uniformly dispersed, and the specific surface area is high. The hydrogenating and desulfurizing transforming catalyst has the advantages that the saturating rate of olefin is low, the loss of octane value is little, the desulfurizing rate is high, and the stability is good.

The invention discloses a petroleum resin hydrogenation catalyst and a preparation method thereof. In terms of oxide mass, the catalyst comprises components as follows: 75.0wt%-96.0wt% of an alumina supporter with a macroporous structure, 1.0wt%-10.0wt% of an active component palladium oxide and 3.0wt%-15.0wt% of nickel phosphide, wherein chitosan is adopted as a pore-expanding agent of the supporter. The petroleum resin hydrogenation activity is high, the activity stability is good, the loss rate of an active center of the catalyst is low, and the operating cycle is long.

The invention discloses a C5 petroleum resin hydrogenation method. According to the invention, a fixed bed reactor is employed, a catalyst is the supported catalyst taking palladium and nickel phosphide as active site, and the hydrogenation process condition is characterized in that the reaction temperature is 180-270 DEG C, the reaction pressure is 6.0-15.0 MPa, and the volume velocity is 0.2-7.0<-h>. The hydrogenation process condition is relatively mild, the performance of the hydrogenation petroleum resin product is good, and the active stability of the catalyst is good.

The invention discloses a method for producing cyclohexane through benzene hydrogenation. A catalyst contains the following components in the mass of oxides: 80-99wt% of a composite support containing zinc oxide-aluminum oxide, 0.1-5wt% of an active component platinum oxide and 0.1-5wt% of an active component palladium oxide; and the catalyst has high benzene hydrogenation activity, low loss rate of a precious metal active component and long running period.

The invention relates to a method for carrying out selective hydrogenation on pyrolytic C6-C8 fractions. A catalyst comprises an alumina carrier having a macroporous structure, and a metal active component-palladium loaded on the carrier, wherein the content of the palladium is 0.2-0.35wt% of the total weight of the catalyst, the alumina carrier having the macroporous structure contains auxiliary components-phosphorus and magnesium, and the contents of the auxiliary components-phosphorus (P2O5) and magnesium (MgO) respectively account for 0.1-2.5wt% and 0.1-2.5wt% of the mass of the carrier; the hydrogenation process conditions are as follows: the reaction inlet temperature is lower than or equal to 45 DEG C, the reaction pressure is 2.5-4.5MPa, the volume ratio of hydrogen to oil is 60-450, and the liquid volume space velocity is 3.0-5.5h<-1>. The catalyst is high in adaptability for pyrolysis gasoline raw materials having different arsenic contents and sulphur contents, and is good in low-temperature activity.

The invention discloses a diene hydrogenation method adopting a fixed-bed reactor. The catalyst is a palladium-based supported catalyst, the reaction technology conditions are as follows: the reaction temperature is 20-90DEG C, the reaction pressure at 1.0-4.0MPa, the mass ratio of hydrogen to diene is 1.0-3.0, and the volume space velocity is 1.0-10.0h<-1>. The hydrogenation reaction technology are mild in conditions, the hydrogenation saturation rate of monoolefine is low under high diene conversion rate, the loss rate of noble metal active centers of the catalyst is low, and the activity stability is good.

The present invention relates to a catalyst for sweetening FCC gasoline. The catalyst comprises an alumina carrier having a macroporous structure and the metal active components nickel and molybdenum supported on the carrier, the alumina carrier having the macroporous structure is 66-91 wt% by weight percentage, the carrier contains auxiliary components phosphorus and magnesium, the pore size distribution is 60-180nm, the pore ratio is 2-75%, the pore volume 0.8-2.0 ml / g, and specific surface area is 250-300 m<2> / g. The content of nickel oxide is 5-19 wt%, and the molybdenum oxide content is 2-15wt%. The catalyst has the advantages of high sweetening activity, high hydrogenation selectivity of diolefin, and less loss of octane value.

The present invention relates to a first-stage selective hydrogenation catalyst for cracking gasoline, wherein the catalyst comprises an alumina carrier having a macroporous structure and a metal active component palladium supported on the carrier, and the palladium content is 0.2-0.35 wt% based on the total weight of the catalyst. The catalyst of the present invention has advantages of good glue capacity, strong arsenic resistance, strong sulfur resistance, and strong coking inhibition.

The invention relates to a method for FCC (fluid catalytic cracking) gasoline sweetening. The method adopts a fixed bed reactor, a used catalyst comprises, in weight percentage, 66-91wt% of alumina support with a macro-porous structure, 5-19wt% of metal active component nickel oxide and 2-15wt% of metal active component molybdenum oxide, the metal active component nickel and the metal active component molybdenum are loaded on the support, the alumina support takes chitosan as a pore-expanding agent, the support comprises additive component phosphorus and additive component molybdenum, and the reaction process conditions include that reaction temperature ranges from 110 DEG C to 220 DEG C, reaction pressure ranges from 1.1MPa to 3.5MPa, volume space velocity ranges from 1.2h<-1> to 4.0h<-1>, and hydrogen oil volume ratio is (7-25):1. The sweetening method has strong adaptability to oil products with different sulfur contents, mercaptan sulfur contents and olefin contents.

The invention discloses a lithium-sulfur battery positive electrode material containing a three-dimensional interpenetrating composite carbon material and a preparation method thereof, a positive electrode plate containing the lithium-sulfur battery positive electrode material, and a lithium-sulfur battery. The composite carbon material has a three-dimensional interpenetrating network structure and is formed from carbon nanotubes and ZIF-67 derived hierarchical porous carbon polyhedrons by interpenetrating. ZIF-67 is grown on the surface of activated carbon nanotubes used as a framework, and the ZIF-67 is carbonized into hierarchical porous carbon polyhedrons through high-temperature sintering. The preparation method of the lithium-sulfur battery positive electrode active material comprises the following steps: weighing the composite carbon material and elemental sulfur according to a mass ratio of 1: 4; uniformly dispersing the composite carbon material and the elemental sulfur in a CS2 solution; carrying out stirring until the solvent is completely volatilized; and infiltrating the elemental sulfur in the mixture into a carbon structure by using a melting method. The positive electrode plate is composed of the positive electrode active material, superconducting carbon and a binder in a mass ratio of 8: 1: 1. The lithium-sulfur battery is mainly composed of the positive electrode plate, a diaphragm, an electrolyte and a lithium metal negative electrode.

The invention discloses an olefin oligomerization catalyst and a preparation method thereof. The catalyst is prepared from the following ingredients through being metered by the mass of oxides: 81.0 to 96.0 weight percent of aluminum oxide carriers with macroporous structures (carriers use chitosan as pore-enlarging agents), 2.5 to 11.5 weight percent of active ingredients of ferric sulfate and 1.5 to 7.5 weight percent of nickel sulfate. The olefin oligomerization catalyst has the advantages that the oligomerization activity is high; the dioolymer selectivity is high; the trimer selectivity is low; the operation period of the catalyst is long.

The invention discloses a method for preparing an environment-friendly brick from potassium feldspar tailings. The method comprises the following technical steps: 1) treatment of the potassium feldspar tailings; 2) primary mixing: fully mixing the potassium feldspar tailings with sludge to obtain sandy clay; 3) secondary mixing: mixing 60-70% by mass of the sandy clay obtained in the previous stepwith 30-40% by mass of fly ash, and carrying out uniform stirring to form a mixture; 4) digestion: adding the stirred secondary mixture into a continuous digestion bin for digestion; 5) compression molding: carrying out compression molding on the digested second mixture under a vacuum condition to obtain a green brick, and naturally airing the green brick until a water content is 15-19% to obtainan aired green brick; 6) sintering of the green brick: putting the aired green brick into a kiln for firing; and 7) sealing of the kiln for cooling: sealing the kiln and conducting water seepage cooling. The environment-friendly brick prepared by using the method disclosed by the invention conforms to the MU25 grade in the national standard 5101-2003 in China, and has obvious advantages.