Catalyst comprising nickel and copper, in a proportion of 1% to 50% by weight of nickel element relative to the total weight of the catalyst, in a proportion of 0.5% to 15% by weight of copper element relative to the total weight of the catalyst, and an alumina support, said catalyst being characterized in that: the mole ratio between nickel and copper is between 0.5 and 5 mol/mol; at least one portion of the nickel and copper is in the form of a nickel-copper alloy; the nickel content in the nickel-copper alloy is between 0.5% and 15% by weight of nickel element relative to the total weight of the catalyst, the size of the nickel particles in the catalyst is less than 7 nm.

A method for making a metal carbide based catalyst for crude oil cracking includes mixing a clay with a phosphorous based stabilizer material to obtain a liquid slurry; adding an aluminosilicate zeolite and an ultrastable Y zeolite to the liquid slurry; adding Al.sub.2Cl(OH).sub.5 to the liquid slurry; adding metal carbide particles, having a given diameter, to the liquid slurry to obtain a mixture; and spray drying the mixture to obtain the metal carbide based catalyst. The metal carbide particles are coated with the aluminosilicate zeolite and the ultrastable Y zeolite.

This document relates to oxidative dehydrogenation catalyst materials that include molybdenum, vanadium, beryllium, oxygen, and optionally aluminum.

Disclosed herein are systems and methods for removing trichloroethane (TCA), trichloroethene (TCE), and 1,4-dioxane (1,4-D) from contaminated liquids. The system and methods rely on catalyst reduction of TCA and TCE, where the reduced products are then degraded by microorganisms The system comprises a first reactor comprising a catalyst film of precious metal nanoparticles deposited on a first nonporous membrane and a second reactor comprising a biofilm of microorganisms that are capable of degrading ethane and 1,4-D deposited on a second nonporous membrane. The first reactor further comprises a hydrogen gas source, wherein the hydrogen gas source delivers hydrogen to the gas-phase side of the first nonporous membrane, and the catalyst film is deposited on the liquid-phase side. The second reactor further comprises an oxygen gas source, wherein the oxygen gas source delivers oxygen to the gas-phase side of the second non-porous membrane, and the biofilm is deposited on the liquid-phase side.

A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe.sub.3O.sub.4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.

An epoxidation catalyst comprising silver, cesium, rhenium and tungsten deposited on an alumina support, wherein the catalyst comprises 20 to 50 wt.-% of silver, relative to the weight of the catalyst, an amount of cesium C.sub.cs of at least 7.5 mmol per kg of catalyst, and an amount of rhenium CR6 and an amount of tungsten Cw so as to meet the following requirements: C.sub.Re6.7 mmol per kg of catalyst; and C.sub.Re+(2c.sub.w)13.2 mmol per kg of catalyst. The epoxidation catalyst allows for a more efficient conversion of ethylene oxide by gas-phase oxidation of ethylene, particularly displaying high selectivity and high activity. The invention also relates to a process for preparing an epoxidation catalyst as defined in above, comprising i) impregnating an alumina support with a silver impregnation solution; and ii) subjecting the impregnated refractory support to a calcination process; wherein steps i) and ii) are optionally repeated, and at least one silver impregnation solution comprises rhenium, tungsten and cesium. The invention moreover relates to a process for producing ethylene oxide by gas-phase oxidation of ethylene, comprising reacting ethylene and oxygen in the presence of an epoxidation catalyst according to any one of the preceding claims.

A silicon-aluminum zeolite SCM-36, a manufacturing method therefor and an application thereof are provided. The zeolite has a silicon/aluminum ratio n5, and has a distinctive XRD diffraction spectrum. The SCM-36 zeolite can be used as an adsorbent, a catalyst, or a catalyst carrier.

The present invention provides a carbon dioxide reduction catalyst capable of reducing carbon dioxide under mild conditions, a carbon dioxide reduction method using the carbon dioxide reduction catalyst, and a carbon dioxide reduction apparatus. A metal oxide of the present invention has a spinel-type crystal structure including a metal element A, manganese, and oxygen. The A is at least one metal element selected from the group consisting of nickel and copper, a molar composition ratio of manganese to oxygen is from 1:1.8 to 1:2.2, and a molar composition ratio of the metal element A to manganese is from 1:1.7 to 1:2.3. In an X-ray diffraction pattern obtained by X-ray diffraction measurement using a Cu-K ray, the metal oxide has an intensity ratio (I.sub.18/I.sub.37) of 0.2 or more between a peak having a 2 value in a range of from 16 to) 20 (P.sub.18) and a peak having a 2 value in a range of from 35 to 39 (P.sub.37).

A catalyst can be used for removing carbonyl sulfide in natural gas. The catalyst has a carrier, and an alkali metal oxide and nickel oxide which are loaded on the carrier. Based on the total weight of the catalyst, the content of the carrier is 90-97 wt %, the content of the alkali metal oxide is 2-6 wt %, and the content of the nickel oxide is 1-4 wt %. At least part of the carrier is AlO(OH), -Al2O3 and -Al2O3 phases. The catalyst can achieve a COS conversion rate of greater than or equal to 99% and a service life of 8 years or above, and can effectively reduce the content of carbonyl sulfur in natural gas.

A process for making a renewable product from a biofeedstock, in which a biofeedstock is contacted with a hydroconversion catalyst under hydroconversion conditions, the biofeedstock comprising one or more biocomponents having a C.sub.20+ content of at least about 10 wt. %, and the hydroconversion catalyst comprising a hydroisomerization catalyst.