189 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 invention relates to a preparation method of a molecular sieve type SCR (Selective Catalytic Reduction) catalytic membrane, which comprises the following steps: taking an alpha-Al2O3 ceramic membrane tube as a carrier, carrying out alkali washing and acid washing on the ceramic membrane tube, and then drying to remove impurities in the ceramic membrane tube. Meanwhile, preparing a membrane preparation solution, firstly mixing a molecular sieve with a metal compound with an SCR effect, adding deionized water to prepare a mixed solution with the catalytic metal content of 0.1-0.3 mol / L, adjusting the pH value, heating and ultrasonically carrying out an ion exchange reaction, and adding a binder to prepare the membrane preparation solution; and loading the molecular sieve catalyst to the inner side of the alpha-Al2O3 ceramic membrane tube in a dip coating manner. And drying and roasting the membrane tube, and carrying out surface hydrophobic modification on the outer side of the ceramic membrane tube to obtain the molecular sieve SCR catalytic membrane. The efficient molecular sieve SCR catalytic membrane is obtained through one-time roasting, waste gas water and dust removal and SCR catalysis can be achieved at the same time, the conversion rate of NOx in the low-temperature environment is high, and the whole process is safe and environmentally friendly.

The invention belongs to the field of application of artificial intelligence in physical and chemical research, and provides a catalytic metal particle electron microscope image recognition method based on density estimation, which comprises the following steps: sending an electron microscope image into a backbone network for feature extraction to generate feature maps with different sampling multiplying power; inputting the feature maps with different scales into an expansion feature pyramid network, and carrying out multi-level feature fusion; sending the data to a self-attention expansion pyramid pooling module, and performing up-sampling to obtain a predicted density map; performing reverse distance transformation on the input original image to obtain a density map true value; using the predicted density map and the true value density map to calculate strong and weak loss, and weighting the two to jointly supervise the training process; performing local maximum positioning on the density map predicted by the final model through a prediction density map target positioning algorithm to obtain a target position coordinate; and finally, calculating to obtain a density and distance distribution curve of the monatomic, and marking the monatomic target in an original image. According to the invention, high-precision identification of the electron microscope image of the catalytic metal particles can be realized.

The invention provides a preparation method of a carbon-supported nano zero-valent iron catalytic material based on multi-metal catalysis, and relates to the technical field of catalytic materials. The preparation method of the carbon-supported nano zero-valent iron catalytic material based on multi-metal catalysis comprises the following steps: step 1, preparing raw materials; step 2, pretreating a carbon carrier; step 3, preparing a multi-metal precursor solution; step 4, carrying out impregnation reaction; a synergistic catalytic system is formed by introducing various metals, so that the catalytic activity of the catalytic material is remarkably improved. Main catalytic metals such as iron, cobalt and nickel interact with auxiliary metals such as molybdenum and tungsten, so that the performance of the material is enhanced. The composite of the carbon nanofibers and the porous graphite is used as the carbon carrier, the advantages of the carbon nanofibers and the porous graphite are combined, a larger specific surface area and a more stable structure are provided for metal loading, and the stability of the catalytic material is improved.

The invention provides a surface treatment method for enhancing adhesive force of a gold coating on a quartz surface. The surface treatment method comprises the following steps: (1) depositing catalytic metal particles on a cleaned quartz plate; (2) removing an oxide layer on the surface of the catalytic metal particles on the quartz plate obtained in the step (1); (3) growing a silicon nanostructure on the surface of the quartz plate obtained in the step (2) by using silane gas; (4) performing high-temperature oxidation on the quartz plate obtained in the step (3), so that the silicon nanostructure is changed into silicon oxide; (5) coating the surface of the quartz plate obtained in the step (4) with organic gold paste; and (6) carrying out heat treatment on the quartz plate obtained in the step (5) to decompose the organic gold on the surface to form the gold coating. According to the method, the morphology of the nanostructure can be effectively regulated and controlled, and the grown nanostructure can form a large number of mechanical occlusion action points, so that a mechanical interlocking structure can be formed with the gold coating, and the adhesive force of the gold coating on the quartz surface is effectively enhanced.

The invention relates to the technical field of microelectronic manufacturing. According to the invention, the self-stratified addressable three-dimensional stacked nanowire integration is realized by utilizing the stepped laminated groove preparation and IPSLS nanowire growth mode, the preparation of an addressable three-dimensional integrated device is facilitated, the integration density can be greatly improved, and the performance of the device is improved. Meanwhile, a preparation mode of a CFET structure is provided based on the stepped three-dimensional stacked nanowires, different types of nanowires are grown in different stepped layers by adopting different catalytic metals, then photoetching definition is performed on each step, source and drain metals are prepared, and a gate dielectric layer and a gate thin film layer are deposited, so that the CFET structure is obtained. According to the invention, a multi-layer channel can be prepared through one-time growth, so that multi-layer stacking and addressing of the CFET are realized in a three-dimensional direction, the integration density of the device is greatly improved, the preparation process is simplified, and the process stability and reliability are improved.

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.

Methods for making light hydrocarbon oligomers and the oligomer products made therefrom. One or more C2 to C12 olefins are reacted with at least one porous support material at a temperature of about 200° C. to 500° C. to provide a higher molecular weight product comprising C3 to C26 olefins. The at least one porous support material is not a traditional catalyst and contains no additional catalytic metals, activators, promoters or acid sites.

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.