35results about How to "High metal dispersion" patented technology

The present invention features a catalytic material which includes a metal catalyst anchored to a nano-sized crystal containing a metal oxide. Furthermore, the present invention features a method of producing the catalytic material described herein. Finally, the present invention features using the catalytic material for removing contaminants and for getting the desired products.

A Fischer-Tropsch process for producing diesel fuel or diesel blending stock with a high cetane number, in a concentration of 65-90 wt % at pressures below 200 psia, using a cobalt catalyst with a rhenium and / or ruthenium promoter. The catalyst is a cobalt catalyst with crystallites having an average diameter greater than 16 nanometers, and the resulting hydrocarbon product after a rough flash, contains less than 10 wt % waxes (>C23).

The present invention is preparation process of two-component and multiple-component loaded catalyst with relatively high loaded amount and containing noble metal(s) of Pt, Pd, Ru, Os, Ir, Rh, Re, etc. and other transition metal(s). By means of altering the solvent composition in dispersion system, raising the viscosity of solvent and lowering the diffusion rate of metal particles inside the solution effectively, it is possible to prevent the mutual polymerization and enlarging of metal particles without adopting macro molecule surfactant in preparing two-component and multiple-component loaded nanometer-level noble metal-based catalyst with high dispersivity and great loaded amount. Several kinds of metal may be loaded onto the carrier in once process while ensuring high metal dispersivity even in case of high metal loading amount.

A method of manufacturing a composite materials in which a carbon material and a metal compound can maintain a nanosized form as a final product is realized, and a method for manufacturing a superior electrode material is provided. A metal compound precursor is formed from a metal compound material source, and a mixture of the metal compound precursor and a carbon material is calcinated. In the treatment to form the precursor, a treatment of absorbing one of the metal compound material sources to the functional group of the carbon material and a treatment of producing on the carbon material a treatment of reacting the remaining material source of the adsorbed metal compound material source on the carbon material to produce a metal compound precursor are performed in separate steps.

The present invention relates to a hydrocracking catalyst containing compound molecular sieve and its preparation method. Said catalyst composition uses amorphous aluminosilicate and a compound molecular sieve as carrier, in which the amorphous aluminosilicate content is 30-60% of catalyst weight, compound molecular sieve content is 1-20% of catalyst weight, and is the mixture of modified Y molecular sieve and SAPO molecular sieve, VIB group metal oxide content is 10-40%, VIII group metal oxide content is 1-20% of IVB group metal oxide content is 1-10%. Said invented catalyst is prepared by adopting co-precipitation method, and its strength and performance can be raised and improved.

The invention relates to a high-activity heavy distillate oil hydrotreatment catalyst preparation method which includes the steps: selecting VIII-group metal nickel soluble salt and polyhydroxy acid complexing agents to prepare acid solution; selecting VIB-group metal molybdenum soluble salt and alkaline precipitants to prepare alkaline solution; mixing large pore volume pseudo boehmite, nanometer titania powder and silica sol to form suspension slurry serving as a substrate, merging flow, adding the acid solution and the alkaline solution, performing closed reaction, uniformly dispersing metal components in titanium-silicon-aluminum media, performing filtration and washing to obtain catalyst precursor filter cakes after reaction, and curing, forming, drying and roasting the catalyst precursor filter cakes to obtain finished catalysts. Compared with bulk phase hydrogenation catalysts prepared by an existing method, the catalysts prepared by the method have the advantages of high mechanical strength, low abrasion, large pore volume, high metal dispersity, good hydrogenation activity, long service life and the like, and are particularly suitable for hydrotreatment of inferior heavy distillate oil which is high in sulfur-nitrogen content, large in polycyclic aromatic hydrocarbon proportion and difficult to process.

The invention provides a carbon-supported multi-component catalyst and a preparation method thereof. The catalyst is composed of a carrier and a metal active component loaded on the carrier, the carrier is activated carbon, and the metal active component is palladium and platinum. and a transition metal additive; based on the quality of the carrier activated carbon, the palladium loading is 0.5wt% to 5.0wt%, the platinum loading is 0.5wt% to 5.0wt%, and the transition metal additive loading is 0.1wt% ~2.5wt%; Simultaneously, the mass ratio of palladium and platinum is 1:0.5~2.0; Catalyst of the present invention can be used in catalytic hydrogenation synthesis benzotriazole ultraviolet absorber; High activity, high selectivity and yield of the target product, good stability, and less waste generated during the hydrogenation process.

The invention discloses a palladium metal hydrogenation catalyst used in unsaturated hydrocarbon hydrogenation. The catalyst comprises a metal active component palladium, a carrier alumina and a silica auxiliary agent. The catalyst provided by the invention has a relatively large specific surface (a specific surface area is 140-330cm<2> / g), and relatively low surface acid content (lower than 0.15mmol / g). The content of the auxiliary agent silica is 0.5-10wt%. Silica is added into the catalyst through a gas-phase silylation treatment upon alumina. Preferably, the catalyst provided by the invention also comprises a plurality of auxiliary agents. When the catalyst provided by the invention is used in an unsaturated hydrocarbon hydrogenation reaction, the catalyst has the advantages of high activity and low yield of green oil and carbon deposit.

The invention provides a H 2 Highly dispersed monolithic catalyst for selective catalytic oxidation, its preparation method and application. The catalyst is suitable for fixed bed reactors. The catalyst has a multi-layer structure, including but not limited to a shell layer, an active component layer, a washcoat layer and a honeycomb support layer. The catalyst of the present invention can be used for H 2 In the process of selective catalytic oxidation, H in the feed gas 2 :O 2 =1:1‑1:3, reaction temperature 150‑250℃, pressure 0.3‑0.6MPa, space velocity 3000‑20000h ‑1 condition, exit H 2 The content is lower than 100ppm, which fully meets the reaction requirements of subsequent gas-phase catalytic coupling of CO to synthesize oxalate.