85 results about "Catalytic metal" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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

The invention relates to an efficient SiC polishing solution based on a core-shell structure functionalized abrasive, which is prepared from the following raw materials in percentage by mass: 1 to 10 percent of core-shell structure functionalized abrasive, 1 to 5 percent of potassium permanganate, 0.01 to 5 percent of dispersing agent, 0.01 to 5 percent of buffering agent and the balance of deionized water, the pH value of the SiC efficient polishing solution is 3-6. According to the invention, the functional abrasive material taking the hard abrasive material as the core and the catalytic metal oxide as the shell is constructed, and the catalytic active component is loaded on the surface of the abrasive material in a chemical bonding manner, so that the interface synergistic efficiency of mechanical grinding and chemical catalysis is obviously enhanced; the technical bottlenecks of insufficient synergistic effect and low material removal efficiency caused by separation of an abrasive and a catalyst in the prior art are solved, efficient material removal without increasing the concentration of an oxidizing agent or external field auxiliary conditions is realized, and excellent surface quality is ensured while the material removal efficiency is improved; therefore, the urgent demand of SiC substrate industrialization on high-quality and high-efficiency planarization processing is met.

The present application provides a non-noble metal composite catalyst, a preparation method and application thereof. Specifically, the present application provides a non-noble metal composite catalyst, which is prepared by impregnating a catalyst carrier in a metal salt solution, a cocatalytic metal salt solution (including an alkali metal salt solution or a rare earth metal salt solution), and a coordination compound solution.

The present invention relates to a porous water-splitting catalyst based on a textile material and a method for preparing the same, and the porous water-splitting catalyst based on a textile material according to the present invention includes: a porous textile support (10) formed by the intercrossing of a plurality of fibers (11); a bonding layer (20) formed on the surface of the fibers (11); a conductive layer (30) including a nanoparticle layer (31) including metal nanoparticles and formed on the bonding layer (20), and a monomolecular layer (33) including an amine group (NH2)-containing monomolecular material and formed on the nanoparticle layer (31); and a catalyst layer (40) containing a catalytic metal and formed on the conductive layer (30) by electroplating of the catalytic metal.

A centralized air disinfection method includes: introducing the gas to be disinfected into the disinfection section of a centralized air disinfection device; simultaneously, injecting water into a nanoscale liquid atomizing module disposed within the disinfection section, the nanoscale liquid atomizing module comprising multiple layers of water distribution membranes, each water distribution membrane being spaced apart in the vertical direction; each water distribution membrane having a plurality of nanoscale water-permeable pores evenly distributed thereon, the openings of the nanoscale water-permeable pores being located on the lower surface of the water distribution membrane; the water distribution membrane being loaded with catalytic metal particles, the metal particles being distributed at least on the lower surface of the water distribution membrane and at each nanoscale water-permeable pore; through water injection, nanoscale water droplets seep out from the nanoscale water-permeable pores of the water distribution membrane; the nanoscale water droplets are catalyzed in situ to produce hydrogen peroxide, which decomposes to produce ·OH; the gas to be disinfected is disinfected by the ·OH and then discharged into the atmosphere. This invention achieves air disinfection by nano-sizing water in the air, causing it to spontaneously generate ·OH, which is used to kill bacteria and microorganisms in the air.

This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, from ≥0.05 to ≤0.80; a first derivative of a melt flow distribution function, formula (I) at a loading of 4000 g, from >−1.51 to ≤−1.15; a sum of unsaturation, SUMU, from ≥0.005 to <0.047 unsaturations per 100 carbon atoms; and a residual catalytic metal 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.d⁢Log⁡(1 / In)d⁢Log⁡(loading)(I)

A membrane electrode assembly for water electrolysis comprises a solid electrolyte membrane, an anode catalyst layer, and a cathode catalyst layer sandwiching the solid electrolyte membrane. The solid electrolyte membrane includes a solid electrolyte layer and a functional layer located on an anode-side surface of the solid electrolyte layer. The anode catalyst layer is located on a surface of the solid electrolyte membrane close to the functional layer. The cathode catalyst layer is located on a surface of the solid electrolyte membrane opposite the functional layer. The functional layer contains a resin and catalytic metal particles dispersed in the resin.

The invention discloses a long glass fiber reinforced polyurethane composite material and a preparation process and application thereof.The long glass fiber reinforced polyurethane composite material adopts calcium ion doped zirconium-based MOF and is modified through phosphite to form a P-Br reaction layer, doped calcium ions are used for replacing part of zirconium-hydroxyl coordination sites, a non-catalytic metal center is formed, and the long glass fiber reinforced polyurethane composite material is obtained. According to the present invention, the aromatic halide coupling and cyclization reaction tendency of the bromination system during the combustion process is weakened, the material can efficiently capture the bromine free radical in the gas phase during the combustion, and the rapid chemical reaction is performed on the P-H bond in the phosphite group and the bromine free radical to generate the stable P-Br structure so as to improve the combustion stability of the material; the bromine free radicals are prevented from participating in generation of toxic substances such as hydrogen bromide or bromo-dioxin, the release amount of toxic flue gas and corrosive gas in the combustion process is remarkably reduced, the safety of the composite material in a fire scene is further improved, and the composite material can meet the strict standard of building door and window materials for low smoke and low toxicity and is suitable for popularization and application. And personnel escape and rescue safety can be effectively guaranteed.

An electrochemical oxygen sensor according to the present invention includes a positive electrode, a negative electrode, and an electrolyte solution constituted by an aqueous solution, in which the negative electrode includes a metal containing, as a main component, an element M selected from Sn and Ni, the electrolyte solution is an aqueous solution having a pH of 3 to 10, the positive electrode includes a catalyst layer containing a catalytic metal, and the catalyst layer includes, on a surface that is in contact with the electrolyte solution, a surface layer containing the element M.

The present invention can provide an exhaust gas purification catalyst showing high NH3 purification performance at cold start after hydrothermal endurance. The exhaust gas purification catalyst disclosed here includes a base material, and an exhaust gas purification layer located on the base material. The exhaust gas purification layer includes a molecular sieve containing substantially no Si, and a catalytic metal. The molecular sieve containing substantially no Si is metalloaluminophosphate whose framework is partially substituted by a metal other than Al.

Provided are: a carbon carrier that effectively maintains the performance of a metal-supported catalyst; the metal-supported catalyst with effectively maintained performance; an electrode; and a battery. The carbon carrier is for supporting catalytic metal particles, wherein the volume of pores having a pore diameter in a range from greater than 0 nm to 100 nm is 1.10 cm3 / g or less, the volume being obtained by the DH method from a nitrogen adsorption isotherm at a temperature of 77K, and in a differential pore volume distribution obtained by the DH method from the nitrogen adsorption isotherm, relative to the pore volume (cm3 / g) in the range of pore diameters from greater than 0 nm to 100 nm, a ratio of the differential pore volume (cm3 / (g·nm)) at the most frequent diameter, which is the pore diameter yielding the maximum value of the differential pore volume in the pore diameter range from greater than 0 nm to 100 nm, is 0.31 nm-1 or greater.

The invention provides a preparation method of a graphite film and a functional part comprising the graphite film. The preparation method comprises the following steps: preparing a solid carbon source coating on the surface of a catalytic metal intermediate layer; placing a catalytic metal intermediate layer with a solid carbon source coating on the surface of the engineering steel, wherein the catalytic metal intermediate layer is located between the solid carbon source coating and the engineering steel; and in the presence of protective gas, performing laser treatment on the engineering steel on which the catalytic metal intermediate layer is placed so as to prepare the graphite film on the surface of the engineering steel. According to the preparation method, laser serves as a heat source, high-speed preparation of the engineering steel surface graphite film can be achieved in the atmospheric environment, the machining efficiency is high, the machining cost is low, and it can be ensured that the substrate surface has enough catalytic capacity for growth of the thick-layer graphite film by flexibly regulating and controlling the thickness of the catalytic metal layer.

A method for pre-treating the surface of a substrate before subsequent electroless copper deposition, comprising: a) a step of preparing a substrate including an active surface on a non-conductive material, wherein the active surface has an activator, and the activator includes a catalytic metal; b) a step of contacting the active surface with a pre-treatment aqueous solution for pre-treatment to obtain a pre-treated surface, wherein the pre-treatment aqueous solution contains or consists of copper ions, an inorganic acid, and a reducing agent, and the pH of the pre-treatment aqueous solution is less than 6, provided that the reducing agent is capable of reducing copper ions at an alkaline pH but not at a pH less than 6; an aqueous stock composition, and its use for preparing a pre-treatment solution for pre-treating a substrate including an active surface on a non-conductive material, wherein the active surface has an activator, and the activator includes a catalytic metal used for subsequent electroless copper deposition onto the pre-treated surface.