148 results about "Catalytic metal" patented technology

The present disclosure relates to fuel cells comprising composite catalytic material comprising (N-doped) carbon nanofoam, catalytic metal and an electrically conductive material comprising an electrically conductive polymer. The fuel cells can advantageously operate at lower temperatures than standard fuel cells.

The present invention provides a catalyst for carbon dioxide reduction with which the conversion of carbon dioxide can be heightened.　The catalyst for carbon dioxide reduction is for reducing carbon dioxide by subjecting the carbon dioxide and hydrogen to a hydrogenation reaction, and includes iron, gallium, and zinc as catalytic metals, the iron being a main component of the catalytic metals.

This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, of from ≥0.05 to ≤0.80; a first derivative of a melt flow distribution function, formula (I) at a loading of 4000 g, of from ≥−1.85 to ≤−1.51; a sum of unsaturation, SUMU, from ≥0.047 to ≤0.100 unsaturations per 100 carbon atoms; and a residual QC catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg / minute, a density from 0.855 to 0.975 g / cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw / Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible as well as rigid applications.

CO2 introduced into the ground reacts with water in the moisture present in the surroundings to convert to hydrocarbon, suppressing leakage of CO2 above ground. The method for producing hydrocarbon has an introduction step for introducing CO2 into a storage site in the ground where moisture and a catalytic metal are present, the pressure is 5 MPa or higher, and the temperature is 40° C. or higher, to bring the CO2 into a subcritical state or a supercritical state, and a synthesis step for reacting the water in the moisture with the subcritical or supercritical CO2 in the storage site to synthesize hydrocarbon. The storage site is preferably a site from 800 m to 1200 m below ground. The pressure of the storage site is preferably 8 MPa or higher.

The electrode catalyst of the present disclosure includes a mesoporous material and catalytic metal particles containing platinum and a metal different from platinum, the catalytic metal particles being supported at least inside the mesoporous material, and the mesoporous material has a mode radius of 1 nm or more and 25 nm or less and a pore surface area of 1.0 cm. 3 / g or more 3.0cm 3 / g or less, and the catalytic metal has the chemical formula Pt x Co 1-y Ni y wherein x of the catalytic metal ranges from 1 to 3, and y ranges from 0.20 to 0.47, and the catalytic metal particles contain an L10 phase.

To enhance adhesive performance to rubber without using a catalyst metal such as cobalt.SOLUTION: An alkaline aqueous solution is brought into contact with the 1A of the steel cord plated with brass (step 12), a silane-coupling agent aqueous solution is brought into contact with the 1A of the steel cord contacted with the alkaline aqueous solution (step 13), and the 1A of the steel cord contacted with the silane-coupling agent aqueous solution is heated (step 14). The contact step with the silane coupling agent aqueous solution (step 13) and the heating step (step 14) are repeated a plurality of times.SELECTED DRAWING: Figure 1

A method for recycling catalytic metals comprising: collecting a plurality of spent catalytic metals, wherein the spent catalytic metals contain cathodes of NMC111, NMC622, NMC811, NCA, LCoO2, LiNi0.5Mn1.5O4, LiMnO4, LiNiO2, LiMn2O4, and / or LiMnO2 compositions; subjecting the plurality of spent catalytic metals to a green mixture, wherein the green mixture includes dihydrogen phosphite and water, phosphoric acid and water, sulfuric acid and water, hydrogen chloride and water, or nitric acid and water, at temperatures of between 80 and 120° C. to form a metal leachate solution; and recovering lithium (Li) from the metal leachate solution.

The invention discloses a low-energy-consumption solid fuel cell type oxygen sensor and a preparation method thereof. The low-energy-consumption solid fuel cell type oxygen sensor comprises a membrane electrode component, and the membrane electrode component comprises a first conductive substrate, an anode catalyst layer, a solid electrolyte layer, a cathode catalyst layer and a second conductive substrate which are sequentially stacked. The solid electrolyte layer is used for separating the anode catalyst layer and the cathode catalyst layer and conducting protons, a preparation material of the anode catalyst layer and a preparation material of the cathode catalyst layer respectively comprise carrier materials loaded with catalytic metal particles, and the anode catalyst layer is used for carrying out oxidation reaction; and the cathode catalyst layer is used for oxygen to generate electrochemical reduction reaction. The low-energy-consumption solid-state fuel cell type oxygen sensor is free of an external power supply, all-solid-state, long in service life and high in stability.

The present invention relates to an improved catalyst for MWCNT production. The present invention also relates to an iron-free supported catalyst for the selective conversion of hydrocarbons into carbon nanotubes, said catalyst comprising cobalt and vanadium as active catalytic metals in any oxidation state on a catalyst support comprising hydroxyl alumina, wherein: - the mass ratio of cobalt to vanadium is between 2 and 15; - the mass ratio of cobalt to aluminum is between 5.8 x 10 ‑2 and 5.8 x 10 ‑1 ; and - the mass ratio of vanadium to aluminum is between 5.8 x 10 ‑3 and 8.7 x 10 ‑2 . The present invention also relates to a method for the preparation of said iron-free supported catalyst and to a method for the preparation of carbon nanotubes using said iron-free supported catalyst.

The application provides a surface treatment method for enhancing the adhesion of a gold coating on a quartz surface, comprising the following steps: (1) depositing catalytic metal particles on a clean quartz wafer; (2) removing the oxide layer on the surface of the catalytic metal particles on the quartz wafer obtained in step (1); (3) growing silicon nanostructures on the surface of the quartz wafer obtained in step (2) using silane gas; (4) high-temperature oxidation of the quartz wafer obtained in step (3) to change the silicon nanostructures into silicon oxide; (5) coating the quartz wafer obtained in step (4) with organic gold paste; and (6) heat treatment of the quartz wafer obtained in step (5) to decompose the organic gold on the surface and form a gold coating. The method can effectively control the morphology of the nanostructures, and the grown nanostructures can form a large number of mechanical bite action points, thereby forming a mechanical interlocking structure with the gold coating and effectively enhancing the adhesion of the gold coating on the quartz surface.

The present invention provides a fuel cell electrode catalyst comprising catalytic metal particles and conductive support particles supporting the catalytic metal particles. In this fuel cell electrode catalyst, the proportion of the surface area of ​​the catalytic metal particles, as calculated from a transmission electron microscope image, occupied by catalytic metal particles having a particle size of 4.5 nm or less is 5% or less.

This invention relates to a method for preparing a molecular sieve-type SCR catalytic membrane. The method utilizes an α-Al₂O₃ ceramic membrane tube as a carrier. The ceramic membrane tube is subjected to alkaline washing and acid washing, followed by drying to remove impurities. Simultaneously, a membrane-forming solution is prepared. First, a molecular sieve is mixed with a metal compound exhibiting SCR efficiency. Deionized water is added to prepare a mixture with a catalytic metal content of 0.1-0.3 mol / L, and the pH is adjusted. An ion exchange reaction is then carried out by heating and ultrasonication. A binder is added to prepare the membrane-forming solution. The molecular sieve catalyst is loaded onto the inner side of the α-Al₂O₃ ceramic membrane tube using an impregnation coating method. Next, the membrane tube is dried and calcined. The outer surface of the ceramic membrane tube is then modified to be hydrophobic, thus obtaining the molecular sieve SCR catalytic membrane. This invention achieves a highly efficient molecular sieve SCR catalytic membrane through a single calcination process, simultaneously realizing waste gas dewatering and dust removal as well as SCR catalysis, and reducing NO emissions at low temperatures. x It has a high conversion rate, and the whole process is safe and environmentally friendly.

A catalyst including a modified silica support having a titanium modifier metal, and a catalytic metal on the modified silica support. A proportion of the modifier metal is present in the form of mononuclear titanium moieties or is derived from a mononuclear titanium cation source at the commencement of modification. The invention also discloses a corresponding modified silica support, a method of producing the catalyst or the modified silica support, and a process for preparing an ethylenically unsaturated acid or ester in the presence of the catalyst.

The present disclosure relates to fuel cells comprising composite catalytic material comprising (N-doped) carbon nanofoam, catalytic metal and an electrically conductive material comprising an electrically conductive polymer. The fuel cells can advantageously operate at lower temperatures than standard fuel cells.

The present invention provides an exhaust gas purification catalyst including a NOx storage layer and has high NOx purification performance. The exhaust gas purification catalyst disclosed here includes a base material and a catalyst layer. The catalyst layer includes a lower layer, an intermediate layer, and an upper layer. The lower layer contains a catalytic metal. The upper layer contains Rh. The intermediate layer includes a front portion located on an upstream side in an exhaust gas flow direction and a rear portion located on a downstream side. Each of the front portion and the rear portion contains Pt and a NOx storage material. The NOx storage material includes at least one NOx storage element selected from the group consisting of an alkali metal element and an alkali earth metal element. A ratio (CA / CB) of a concentration (CA) of the NOx storage element included in the front portion per 1 L of the base material to a concentration (CB) of the NOx storage element included in the rear portion per 1 L of the base material satisfies 0<CA / CB<1.

A catalyst solution for electroless plating is provided. The catalyst solution is printable and devoid of an amine. The catalyst solution comprises a catalytic metal salt, a solvent, and an epoxy.

Provided is a method for forming a graphene structure without forming a catalytic metal layer and activating the same, the graphene structure forming method including: a step of preparing a substrate to be processed; and a step of forming a graphene structure on a surface of the substrate to be processed by using a carbon-containing gas as a film forming raw material gas in a state in which the surface of the substrate to be processed has no catalytic function, and performing remote microwave plasma CVD.

The present invention provides an electrochemical oxygen reduction catalyst having high proton conductivity and high durability. One embodiment of the present invention relates to an electrochemical oxygen reduction catalyst comprising a catalytic metal that has oxygen reduction activity and a modification layer that modifies the catalytic metal, wherein the modification layer contains a nitrogen-containing cyclic organic compound, or a polymer thereof, or a cation thereof, and an unsubstituted oxoacid or an anion thereof. Another embodiment of the present invention relates to a fuel cell comprising at least: a cathode electrode catalyst layer containing the electrochemical oxygen reduction catalyst according to the one embodiment of the present invention; an anode electrode catalyst layer; and an electrolyte membrane disposed between the cathode electrode catalyst layer and the anode electrode catalyst layer. Still another embodiment of the present invention relates to a method for producing the electrochemical oxygen reduction catalyst according to the one embodiment of the present invention, the method including a modification step in which a catalytic metal containing platinum or a platinum alloy, and a modifier containing a nitrogen-containing cyclic organic compound, or a polymer thereof, or a cation thereof, and an unsubstituted oxoacid or an anion thereof are mixed to modify the catalytic metal.

This disclosure relates to ethylene interpolymer compositions, films prepared therefrom and a nonlinear rheology method capable of determining presence of long-chain branched structures in these ethylene interpolymer compositions. Ethylene interpolymer compositions disclosed herein specifically relates to ethylene interpolymer products having: a dimensionless nonlinear rheology network parameter, Δint., greater than or equal to 0.01, satisfying 0.01×(Z−48)0.78≤Δint.≤0.01×(Z−60)0.78 inequality wherein Z is a normalized molecular weight defined by (I) where Mw and Me are the weight average and entanglement molecular weights; and a residual catalytic metal of from ≥0.03 to ≤5 ppm of hafnium. The disclosed ethylene interpolymer products have a melt index from about 0.3 to about 500 dg / minute, a density from about 0.855 to about 0.975 g / cc, a polydispersity, Mw / Mn, from about 1.7 to about 25 and a Composition Distribution Breadth Index (CDBI50) from about 1% to about 98%.

To provide a carbon carrier which achieves effective maintenance of performance of a metal-supported catalyst, and to provide a metal-supported catalyst, an electrode and a battery in which performance is effectively maintained.SOLUTION: Wherein a volume of pores having pore diameters in a range of more than 77K and not more than 0nm, which is obtained by a DH method from a nitrogen-adsorption isotherm at a temperature of 100nm, is 1. 10cm3 / g or less, the ratio of the differential pore volume (cm3 / (g·nm)) at the most frequent diameter, which is the pore diameter that gives the maximum differential pore volume within the range of pore diameters exceeding 0 nm and 100 nm or less in the differential pore volume distribution obtained from the nitrogen adsorption isotherm by the DH method, to the volume (cm3 / g) of pores within the range of pore diameters exceeding 0 nm and 100 nm or less is 0.31 nm-1 or greater.SELECTED DRAWING: None

A method for recycling catalytic metals comprising: collecting a plurality of spent catalytic metals, wherein the spent catalytic metals contain cathodes of NMC111, NMC622, NMC811, NCA, LCoO2, LiNiO.5Mnl.5O4, LiMnO4, LiNiO2, LiMn2O4, and / or LiMnO2 compositions; subjecting the plurality of spent catalytic metals to a green mixture, wherein the green mixture includes dihydrogen phosphite and water, phosphoric acid and water, sulfuric acid and water, hydrogen chloride and water, or nitric acid and water, at temperatures of between 80 and 120°C to form a metal leachate solution; and recovering lithium (Li) from the metal leachate solution.

A method of manufacturing a fuel cell catalyst may include a method of manufacturing a carbon support for a fuel cell catalyst, wherein the carbon support has improved catalytic metal binding force and improved carbon durability. The carbon support may be coated with a carbon layer that is highly doped with heteroatoms. The carbon layer may be formed by uniformly compounding a conductive polymer containing heteroatoms with a carbon support and thermally treating the compounded mixture.

The present invention relates to the field of microelectronic manufacturing technology. The present invention utilizes the preparation of stepped stacked trenches and the growth method of IPSLS nanowires to achieve self-layered addressable three-dimensional stacked nanowire integration and is beneficial to the preparation of addressable three-dimensional integrated devices, which can greatly improve the integration density and enhance the device performance. At the same time, based on the stepped three-dimensional stacked nanowires, the present invention proposes a preparation method for a CFET structure. Different types of nanowires are grown in different stepped layers using different catalytic metals, and then the source and drain metals are defined and prepared by lithography for each step, and the gate dielectric layer and the gate thin film layer are deposited. Multiple channels can be prepared through one growth, so as to achieve multi-layer stacking of CFETs in the three-dimensional direction and achieve addressability, greatly improving the integration density of the device, simplifying the preparation process, process stability and reliability.

According to the high-iodine-value activated carbon composite adsorption material for removing formaldehyde and the preparation method of the high-iodine-value activated carbon composite adsorption material, a TiO2-MOFs composite structure is constructed on an activated carbon carrier, and a copper-manganese-based or copper-manganese-cerium-based catalytic metal oxide is further loaded, so that the specific surface area and active sites of the material can be remarkably increased, the synergistic effect of adsorption and catalysis is achieved, and the adsorption efficiency is improved. The formaldehyde adsorption and oxygenolysis are enhanced, so that the formaldehyde removal efficiency and stability are improved.

This exhaust gas purification catalyst is provided with a catalyst layer (20) having a lower catalyst layer (22) and an upper catalyst layer (24). Furthermore, a lower-layer front section (A) is provided on the upstream side of the lower-layer catalyst layer (22), a lower-layer rear section (B) is provided on the downstream side, and an upper-layer front section (C) is provided on the upstream side of the upper-layer catalyst layer (24), and an upper-layer rear section (D) is provided on the downstream side. In addition, the types of catalytic metals in the lower-layer front part (A), the lower-layer rear part (B), the upper-layer front part (C), and the upper-layer rear part (D) are individually set. This makes it possible to exhibit appropriate purification performance in accordance with the operating conditions of the internal combustion engine. Furthermore, in the exhaust gas purification catalyst, the lower layer overlap section (25) and the upper layer overlap section (27) are formed so as not to overlap in the cylinder axial direction (X) from the perspective of both exhaust gas purification performance and pressure loss suppression. As a result, provided is an exhaust gas purification catalyst capable of exhibiting appropriate purification performance in accordance with the operating conditions of an internal combustion engine.

An electrode for a fuel cell comprises an electrode binder and an electrode catalyst dispersed therein. The electrode catalyst includes a catalyst complex with a catalytic metal supported on a support and a porous polymer coating layer. The porous polymer enhances performance by forming a core-shell structure on the catalytic metal surface. A method of manufacturing the electrode includes involving preparation of the catalyst complex, coating the catalytic metal with the porous polymer to form an electrode catalyst, combining the catalyst with an electrode binder to prepare a slurry, and applying the slurry onto a substrate. The porous polymer is optionally a polymer of intrinsic microporosity (PIM) or a copolymer, with molecular weight, composition, and thickness optimized for conductivity and performance. The electrode is suitable for use in a membrane-electrode assembly for fuel cells.

The utility model discloses a hydrogen engine lubricating oil rapid examination simulation device which comprises a container, a stirrer, an engine oil pump, a controllable high-temperature heater, a copper alloy catalytic metal strip and an engine oil temperature sensor, and the upper portion of the container is provided with an engine oil adding opening, the engine oil temperature sensor and the copper alloy catalytic metal strip. The stirrer and the oil drainage valve are mounted at the bottom; an inlet of the oil pump is connected with an oil conveying pipe, and the other end of the oil conveying pipe is connected with the container. An outlet of the oil pump is connected with an oil inlet pipe, and the other end of the oil inlet pipe is connected with an inlet of the controllable high-temperature heater. An outlet of the controllable high-temperature heater is connected with the container through an oil outlet pipe, and the hydrogen engine water dripping device is characterized by further comprising a flow-controllable water dripping pipe which is installed on the upper portion of the container and used for simulating the environment where a large amount of water is generated in the actual operation process of a hydrogen engine. The device has the advantages of being simple in structure, convenient to operate, capable of achieving rapid aging of lubricating oil and the like.

A modified resin base material that includes a resin material having a base at a surface thereof, and a plating catalytic metal on the surface of the resin material, wherein a combination of the plating catalytic metal and the base is at least one of the following Lewis acid-base combinations according to a HSAB principle: a hard acid and a hard base or an intermediate base, an intermediate acid and a hard base, an intermediate base or a soft base, or a soft acid and an intermediate base or a soft base.

This invention belongs to the field of aromatic ring hydrogenation catalyst technology, and relates to a mixed oxide supported ultra-low ruthenium-based catalyst, its preparation method, and its application. This invention improves the acidic sites at the catalyst surface by controlling the proportion of the metal oxide support. Simultaneously, it utilizes the mesoporous structure and high specific surface area of ​​the support, and leverages the ruthenium catalytic active sites at the hydroxyl coordination sites on the support surface to effectively avoid the problem of catalytic metal aggregation and deactivation. This enhances the stability of the active metal in the catalytic material, inhibits its aggregation during the reaction, and thus significantly reduces the ruthenium loading of the catalyst. Ultimately, it obtains a catalytic system with high conversion, high selectivity, high TON value, and high TOF value, meeting the atom economy and environmental friendliness requirements of industrial production.

To provide a carbon carrier which achieves effective maintenance of performance of a metal-supported catalyst, and to provide a metal-supported catalyst, an electrode and a battery in which performance is effectively maintained.SOLUTION: Wherein a volume of pores having pore diameters in a range of more than 77K and 0nm or less, which is obtained by a DFT method from a nitrogen-adsorption isotherm at a temperature of 70nm, is 0. 70cm3 / g or less, A volume of pores having pore diameters less than 5nm is 0. 31cm3 / g or more, a true concentration obtained by a constant volume expansion method is 1. 9g / cm3 or more, and a half width at half maximum of a D band having a peak top near a Raman shift 1340cm of - 1 is 50cm of - 1 or less.SELECTED DRAWING: None