8 results about "Porous catalyst" patented technology

This invention relates to a supported single-atom catalyst, its preparation method, and its application in the conversion of n- and secondary hydrogens. The preparation method includes: mixing a salt solution containing a metal precursor with a porous catalyst support, ultrasonicating, drying, and calcining to obtain the supported single-atom catalyst. This catalyst preparation method is simple, highly reproducible, and easy to scale up, and exhibits high activity, high stability, and high mechanical strength in the catalytic conversion of n- and secondary hydrogens. Under conditions of 78 K, 2000 cc(H2) / min / g(catalyst), and 1 atm, the supported single-atom catalyst achieves a catalytic conversion efficiency of up to 93% for n- and secondary hydrogens.

The application relates to the technical field of catalysts, and discloses a modified bimetallic catalyst and a preparation method and application thereof, the preparation method of the modified bimetallic catalyst comprises the following steps: adding a niobium compound, a template agent, a titanium compound and carbon balls into a solvent to obtain a mixed solution; then adding an amino precipitate into the mixed solution to carry out reaction, and obtaining a crude product after calcination; then reacting the crude product with an amino modification solution, and obtaining the product after drying; on the one hand, the titanium compound is added to modify the niobium-based catalyst, chemical action occurs between the two kinds of metals, and the catalytic activity is enhanced; on the other hand, the hollow porous catalyst is prepared by using the double-template combination and the hydrothermal method, transmission channels are provided for macromolecular sulfides, and the adsorption and diffusion processes in the pore channel are accelerated; meanwhile, after the amino modification, the catalyst surface is rich in amino groups and the hydroxyl group polarity is enhanced, the catalyst can directly adsorb the sulfone substances generated in the desulfurization process, and low-temperature and high-efficiency desulfurization is realized.

The application relates to the field of catalysts, and particularly discloses an intelligent design and prediction method for a crystalline porous benzene selective hydrogenation basic zinc carbonate and zinc oxide co-modified nano catalyst, a preparation method of which adopts a mixed solution prepared by mixing and polyethylene glycol as a precipitant for rapid precipitation, and then high-pressure reduction, organic solvent washing, alkali washing and water washing steps are cooperated to prepare a porous catalyst with high specific surface area and uniform dispersion of active components. On this basis, an intelligent design and performance prediction system based on deep learning is further integrated, a convolutional neural network is used to analyze the microstructure of the catalyst, a multi-modal deep neural network is used to predict the performance of the catalyst, and an optimization algorithm is used to recommend optimal process parameters. The porous structure is constructed by co-modification of basic zinc carbonate and zinc oxide, and the intelligent system is combined to realize efficient research and development and accurate performance prediction of the catalyst.

A system and method of producing hydrogen from a petroleum reservoir includes providing a porous configuration of catalyst particles within one or more wellbores in the petroleum reservoir, heating the catalyst particles using one or more electromagnetic wave generators such that hydrocarbons passing through or near the porous configuration of catalyst particles react with the heated catalyst particles and generate syngas. The porous configuration of catalyst particles is disposed only within the one or more wellbores proximate to the one or more electromagnetic wave generators. The hydrogen is separated and extracted from the syngas at the surface or within the one or more wellbores.

This invention relates to a gas diffusion electrode for the electrochemical reduction of carbon dioxide, comprising: a conductive porous gas diffusion layer; at least one porous catalyst layer disposed adjacent to the gas diffusion layer, the at least one porous catalyst layer comprising a first porous catalyst layer comprising a copper-based first catalyst material, wherein the first porous catalyst layer comprises a mixture of the copper-based first catalyst material and a hydrophobic material, the porous catalyst layer being obtained from a precursor material free of any ionomers; and an ionomer layer disposed adjacent to the at least one porous catalyst layer, the ionomer layer being obtained from a precursor material free of any catalysts. The invention also relates to an electrochemical cell comprising such a gas diffusion electrode, and a method for manufacturing such a gas diffusion electrode.

The utility model discloses a kind of nitrogen oxide sensor piece core, nitrogen oxide sensor assembly and vehicle, nitrogen oxide sensor piece core includes base, base surface is equipped with air inlet, base inside is provided with decomposition chamber and detection chamber, air inlet, decomposition chamber and detection chamber are sequentially communicated, the inner wall of base at decomposition chamber place is coated with porous catalyst coating, catalyst can react to ammonia gas under high temperature environment, so that ammonia gas is converted into nitrogen and water.Nitrogen oxide sensor piece core of the application sets catalyst in piece core inside, compared with coating catalyst on nitrogen oxide sensor piece core outside, neither affect nitrogen oxide piece core installation, nor need a large number of information samples as experimental data, can be quickly assembled application.

The application provides a green coupling hydrogen production system and method, which comprises a green electricity system, a catalyst preparation and hydrogen production system, an aluminum recovery system and a catalytic hydrogenation system. Green electricity generated by renewable energy is used to form aluminum-based alloy through smelting, the aluminum-based alloy is crushed and dealloyed to form a high-efficiency porous catalyst, and high-purity hydrogen is generated. Finally, the generated hydrogen and catalyst are used for catalytic hydrogenation reaction to produce high-value-added chemicals. In addition, aluminum salt obtained from the aluminum-based alloy is precipitated and calcined to obtain alumina, the green electricity is passed into the alumina, and the alumina is electrolyzed to obtain aluminum, and the aluminum raw material enters the cycle again. In the application, the hydrogen produced by coupling has high purity, does not need to be separated, and has a fast hydrogen production rate, the porous catalyst produced by coupling has excellent performance and is widely used, the metal aluminum is recycled, the entire system uses green electricity, the entire process is green, and there is no carbon emission.