7results about How to "Increase the aperture" patented technology

This invention discloses a carbon-coated iron porous aerogel, its preparation method, and its application in lithium metal anodes, belonging to the field of lithium metal anode material preparation. The carbon-coated iron porous aerogel of this invention constructs a continuously conductive and highly stable carbon-based porous three-dimensional framework through the synergistic effect of two-dimensional graphene oxide, one-dimensional carbon nanotubes, and carbon-coated iron units. The NaCl hard template effectively amplifies the macropore size and increases the number of pores, providing interconnected channels for the rapid wetting and spontaneous climbing of molten lithium. The carbon-coated iron interface serves as a stable lithiophilic site, inducing uniform nucleation of lithium metal and restricting disordered growth, thereby achieving stable confinement of lithium metal in the composite electrode.

The application discloses a high-strength, large-pore-volume phosphorus-containing binder, characterized in that the binder comprises a glue, a curing agent and a modifier; the glue comprises a phosphorus-containing compound and an aluminum-containing compound; the curing agent comprises a gamma-aluminum oxide precursor, an acid and an alkylammonium salt, and the modifier is a metal chelate; wherein the colloidal solubility index of the gamma-aluminum oxide precursor is less than or equal to 50%; and the modifier is reacted with the glue in a high-shear dispersion emulsifier. The phosphorus-containing binder provided by the application, in combination with a conventional method, can obtain a catalytic cracking catalyst which, on the basis of high molecular sieve content and large pore volume, still has high wear resistance.

The invention discloses a silicon oxide microsphere as well as a preparation method and application thereof. The silicon oxide microspheres are large-aperture silicon oxide microspheres, the specific surface area is 395-750m < 2 > / g, the pore volume is 1.0-3.5 ml / g, and the average aperture is 17-50nm. The silicon oxide microspheres have the characteristics of large specific surface area, large pore volume and large pore diameter, and the catalyst prepared by using the silicon oxide microspheres as the carrier has the advantage that the activity is remarkably improved when the catalyst is applied to olefin polymerization reaction.

This invention relates to the field of hydrocracking catalysts, and discloses a hydrocracking catalyst, its preparation method and application, and a method for hydrocracking treatment of residue oil. The hydrocracking catalyst contains molecular sieves, silicon-modified alumina, and active metal components. Optionally, the hydrocracking catalyst also contains alumina and / or additives. The content of the molecular sieve is 5-25 wt%, the content of the silicon-modified alumina is 30-60 wt%, and the content of the alumina is 0-20 wt%. The content of the active metal components, calculated as oxides, is 5-35 wt%, and the content of the additives, calculated as oxides, is 0-1.0 wt%. The catalyst provided by this invention has the advantages of large specific surface area, large pore volume, large pore size, and high metal content. When used in the hydrocracking treatment of residue oil, it not only exhibits high activity and good stability, but also improves naphtha selectivity, expands feedstock adaptability, and reduces hydrogen consumption.

This invention discloses a Ni-based catalyst, its preparation method, and its application in the oligomerization reaction of ethylene, belonging to the field of catalyst synthesis technology. This invention uses ammonium niobate oxalate hydrate as the niobium source and adds an ammonium solution to the reaction system. Under ultrapure water as the solvent, a niobium oxide support with a nanorod morphology is synthesized. A metal nitrate is used as a supporting metal precursor, and the precursor is loaded onto the nanorod niobium oxide support using a wet impregnation method to obtain a catalyst precursor. The catalyst precursor is then heat-treated to obtain a nanorod niobium oxide-supported nickel-based catalyst. The nanorod niobium oxide-supported nickel-based catalyst prepared by this invention exhibits high 1-butene selectivity and ethylene conversion in the ethylene oligomerization reaction.

This invention relates to a C x N y This invention relates to a Pt@C fuel cell catalyst and its preparation method, belonging to the field of fuel cell catalyst technology. First, Pt@C is synthesized via a solvothermal reaction using ethylene glycol reduction. Then, it is mixed with a nitrogen-containing polymer material and cobalt chloride hexahydrate, and subjected to reduction in a reducing atmosphere, high-temperature treatment, carbon pyrolysis, and alloying to obtain porous nitrogen-containing carbon-coated Pt@C. x N y @PtCo / C catalyst. In the prepared catalyst, the porous coating layer significantly reduces the poisoning of catalyst particles by resin during fuel cell operation, improves cell activity, and extends cell life, exhibiting excellent activity and durability.

The application discloses a magnesium-aluminum alloy workpiece and a surface nano processing method thereof, and relates to the technical field of metal material processing technology.The roughening liquid adopts sulfuric acid to realize surface etching, forms uniform corrosion pits, and is matched with hydroxyethylidene diphosphonic acid corrosion inhibitor to effectively inhibit the pitting corrosion and intergranular corrosion of the magnesium-aluminum alloy and avoid excessive roughening to cause the strength of the base material to decrease.During ash removal, an alkaline medicine liquid is added with a surfactant, isostearyl alcohol polyoxyethylene ether is used as a non-ionic surfactant, residual ash in the corrosion pits is stripped, an activated metal surface is exposed, and the uniformity of subsequent electrolytic treatment is ensured.The application generates a stable and firm composite oxide film on the surface of the magnesium-aluminum alloy workpiece through electrolytic treatment, uniform nano holes are formed on the oxide film, and the bonding performance of the magnesium-aluminum alloy workpiece subjected to nano injection molding is improved.