A method of producing bifunctional catalysts by extrusion may include mixing an acid catalyst, a metal catalyst, optionally a binder, and a fluid to produce a dough; extruding the dough to form an extrudate; producing a powder from the extrudate; and calcining the powder to produce an acid/metal bifunctional catalyst. Such acid/metal bifunctional catalysts may be useful in, among other things, converting syngas to dimethyl ether in a single reactor.

A denitration catalyst for removing nitrogen oxide in an exhaust gas is represented by the following chemical formula: Ba.sub.3Y.sub.(4-x)A.sub.xO.sub.9, wherein A is an element selected from the group consisting of Bi, Sn, Ga, Mn, Ti, and Al; and X is 0.4 or more and 2 or less. A denitration device has the denitration catalyst for removing nitrogen oxide in an exhaust gas discharged from an exhaust gas generation source including a gas engine, a gas turbine, a melting furnace, or a boiler.

A denitration catalyst for removing nitrogen oxide in an exhaust gas is represented by the following chemical formula: Ba.sub.3Y.sub.(4-x)A.sub.xO.sub.9, wherein A is an element selected from the group consisting of Bi, Sn, Ga, Mn, Ti, and Al; and X is 0.4 or more and 2 or less. A denitration device has the denitration catalyst for removing nitrogen oxide in an exhaust gas discharged from an exhaust gas generation source including a gas engine, a gas turbine, a melting furnace, or a boiler.

The invention describes single-site metal catalysts such as Pt single-site centers with a 3,6-di-2-pyridyl-1,2,4,5-tetrazine (DPTZ) ligand on support such as a powdered MgO, Al.sub.2O.sub.3, CeO.sub.2 or mixtures thereof.

The present invention relates to a method for preparing a metal catalyst (Ni, Co, etc.)-supported porous silicon carbide structure having meso- to macro-sized pores, high porosity and superior mechanical properties. Unlike the existing method wherein a porous silicon carbide structure is prepared and then the metal catalyst is infiltrated therein, the preparation of the porous silicon carbide structure and the supporting of the metal catalyst occur at the same time by the mixing metal catalyst material and starting materials. As a result, the metal catalyst is distributed uniformly in the porous silicon carbide structure and it is possible to locate a desired amount of the metal catalyst inside the porous silicon carbide structure.

A process and catalyst is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products using multifunctional catalysts. Multifunctional catalysts enable use of less expensive metal by substituting expensive metals for less expensive metals with no loss or superior performance in slurry hydrocracking. Less available and expensive ISM can be replaced effectively.

Catalysts are described. The catalysts comprise a dried extrudate of a mixture of -alumina and at least one mixed metal oxide or mixed metal hydroxide, the -alumina having a BET surface area of 150 m.sup.2/g to 275 m.sup.2/g. Processes of making the hydroprocessing catalysts, and hydroprocessing processes using the catalysts are also described.

Provided in this disclosure are oxidative dehydrogenation catalysts that include a mixed metal oxide having the empirical formula:

Mo.sub.1.0V.sub.0.12-0.49Te.sub.0.05-0.17Nb.sub.0.10-0.20O.sub.d

wherein d is a number to satisfy the valence of the oxide. The oxidative dehydrogenation catalyst is characterized by having XRD diffraction peaks (2 degrees) at 220.2, 270.2, 28.00.2, and 28.30.1. The disclosure also provides methods of making the catalysts that include wet ball milling.

The present disclosure disclosures a graphene modified iron-based catalyst and preparation and application thereof for use in Fischer-Tropsch reaction, belonging to the technical field of catalytic conversion of synthesis gas. The catalyst consists of, by mass percent, 0.01-30% of graphene, 0-20% of promoter and 60-99.99% of iron oxide powder. The preparation process of the catalyst is as follows: the graphene, the iron oxide powder and the promoter are sequentially placed in an aqueous solution for ultrasonic treatment and stirring, and then rotary evaporation, drying and calcining are conducted. The preparation method is simple. The catalyst shows excellent activity in the Fischer-Tropsch reaction, and maintains a high CO conversion rate of 90% or above for a long time at a very high reaction space velocity; meanwhile, the alkane content in a product is low, and an olefin-alkane ratio can reach 14, thus having an extremely high industrial application value.

A reverse water-gas shift catalyst that can be used at high temperatures is obtained. A reverse water-gas shift catalyst (cat1) is produced by executing an impregnation-supporting step of impregnating a carrier (cb1) containing alumina as a main component with nickel as a catalytically active component (ca1) to be supported on the carrier, and calcinating a precursor obtained in the impregnation-supporting step at a temperature of 500? C. or higher.