A method for activating a chromia-based catalyst for fluorination and/or hydrofluorination comprises the steps of: a) optionally drying the catalyst at a temperature of from 100° C. to 400° C.; b) treating the catalyst with a composition comprising HF at a temperature of from 100° C. to about 500° C.; c) treating the catalyst with a composition comprising an oxidant and optionally HF at a temperature of from about 100° C. to about 500° C.

The present invention relates to a dielectric barrier discharge (DBD) plasma reactor comprising a catalyst bed for CO.sub.X hydrogenation in a discharge region; and a method to produce light hydrocarbons from a CO.sub.X-containing gas mixture in the DBD plasma reactor. In the DBD plasma reactor for a CO.sub.X hydrogenation reaction, the catalyst for CO.sub.X hydrogenation comprises a catalytically active component on a mesoporous support that is a dielectric. When the DBD plasma reactor for a CO.sub.X hydrogenation reaction according to the present invention is used, it is possible to convert by-product gases or waste gases into higher-value-added chemical products without additional heat supply from the outside.

A method of forming a bismuth-based catalyst can include mixing an inorganic alkali compound, a bismuth source compound, a transition metal precursor, and a reducing agent in an aqueous solution to form a bismuth precursor liquid. The bismuth precursor liquid can be hydrothermally reacted at a conversion temperature for a conversion time to produce the bismuth-based catalyst.

Catalyst for oxygen storage capacity applications that include a zinc doped manganese-iron spinel mixed oxide material. The zinc doped manganese-iron spinel mixed oxide material may be synthesized by a co-precipitation method using a precipitation agent such as sodium carbonate and exhibits a high oxygen storage capacity.

The subject matter of the invention is a method for producing composites, comprising mixed oxides of aluminum oxide and cerium/zirconium, hereinafter referred to briefly as Al/Ce/Zr oxide composite(s), using boehmite and soluble cerium/zirconium salts. Al/Ce/Zr oxide composites produced in this way have an increased thermal stability.

The present invention relates to a catalyst for oxidative dehydrogenation and a method of preparing the same. More particularly, the present invention provides a catalyst for oxidative dehydrogenation having a porous structure which may easily control heat generation due to high-temperature and high-pressure reaction conditions and side reaction due to the porous structure and thus exhibits superior product selectivity, and a method of preparing the catalyst.

The present disclosure provides mixed molybdenum oxide catalysts, methods for preparing epoxides from olefins and CO2 using them, and methods of making the mixed molybdenum oxide catalysts by impregnation or co-precipitation. In a preferred embodiment, the mixed molybdenum oxide catalysts are silver/molybdenum oxide catalysts, ruthenium/molybdenum oxide catalysts, or a combination thereof.

The present invention provides a method for synthesizing high-purity carbon nanocoils based on a composite catalyst formed by multiple small-sized catalyst particles, and belongs to the technical field of material preparation. In the present invention, Fe—Sn—O nanoparticles with sizes of less than 100 nm prepared by chemical or physical methods are used as catalysts, and stacked and made into contact in a simple manner, and then carbon nanocoils are efficiently synthesized from the prepared catalysts by a thermal chemical vapor deposition method. The method provided by the present invention has simple process and low cost. In addition, the preset invention discloses a novel carbon nanocoil growth mechanism, which makes the prepared catalyst for carbon nanocoil growth more efficient and easier for industrialized mass production.

The present invention relates to methods and catalysts for producing methylbenzyl alcohol from ethanol by catalytic conversion, and belongs to the field of chemical engineering and technology. The present invention develops a route of producing methylbenzyl alcohol starting from green and sustainable ethanol and provide corresponding catalysts used for the catalytic conversion route. This innovative reaction route has several advantages, such as, simple process, eco-friendly property, and easy separation of products, as compared with a traditional petroleum-based route. This present route has a reaction temperature of 150-450° C. and total selectivity of 72% for methylbenzyl alcohol, and has good industrial application prospect. The innovation of this patent comprises the catalysts synthesis and the reaction route.

Provided is a method for directly preparing dimethyl ether by synthesis gas, the method comprises: the synthesis gas is passed through a reaction zone carrying a catalyst, and reacted under the reaction conditions sufficient to convert at least a portion of the raw materials to obtain the reaction effluent comprising dimethyl ether; and the dimethyl ether is separated from the reaction effluent, wherein the catalyst is zinc aluminum spinel oxide. In the present invention, only one zinc aluminum spinel oxide catalyst is used, which can make the synthesis gas to highly selectively form dimethyl ether, the catalyst has good stability and can be regenerated. The method of the present invention realizes the production of dimethyl ether in one step by the synthesis gas, and reduces the large energy consumption problem caused by step-by-step production.