Load type carbonized nickel indium alloy catalyst and its preparation method and application

Abstract

The invention discloses a load type carbonized nickel indium alloy catalyst and its preparation method and application. The load type carbonized nickel indium alloy catalyst is composed of a carrier and a carbonized nickel indium alloy loaded thereon; the catalyst has the general formula which is shown as InNixCy / ZT, wherein x is not more than 5 and not less than 1, y is not more than 1 and not less than 0.1; the mass percent of InNixCy / ZT in the load type carbonized nickel indium alloy catalyst is 1-40%, and the allowance is carrier. The load type carbonized nickel indium alloy catalyst is featured by stable structure, good thermal conductivity, high permeability, high conversion rate and selectivity, high activity, high mechanical strength, easy shaping, and easiness in filling, high flux and low pressure drop, and others; the catalyst can meet requirements of strong suction / exothermic reaction in chemical industrial process on fast thermal / mass transfer, and good catalytic performance; the catalyst is excellent catalyst for reversed water gas shift reaction, dimethyl oxalate hydrogenated glycol reaction, and carbon dioxide hydrogenated methanol reaction.

Description

technical field [0001] The present invention relates to a kind of catalyst and its preparation method and application, specifically, relate to a kind of supported nickel indium carbide catalyst and its preparation method and its inverse water gas shift reaction, dimethyl oxalate hydrogenation ethylene glycol The application in the reaction and the reaction of hydrogenation of carbon dioxide to methanol belongs to the technical field of catalysis. Background technique [0002] Carbon dioxide is the most important greenhouse gas, and the thermal energy utilization of fossil energy produces a large amount of CO 2 , has destroyed the carbon balance of the earth's ecosystem and seriously threatened the sustainable development of human beings. Therefore, CO 2 Translational and applied research in China is becoming more and more active. will CO 2 As a cheap and abundant C1 resource, it can be efficiently converted with hydrogen produced by renewable energy to produce useful chem...

AI Technical Summary

Problems solved by technology

Among the copper-based catalysts, Cu-Zn-Al is the most typical copper-based catalyst with high catalytic activity but poor selectivity to methanol; LaCr 1-x Cu x o 3 Catalyst (CN101690894A), at 250°C, 2.0MPa, 9000L h -1 kg -1 、H 2 / CO 2 = CO under 2 reaction conditions 2 The conversion rate is 3-12%, and the methanol yield is only 0.06-0.38g g cat -1 h -1 ; current relatively good CO 2 Hydrogenation methanol synthesis catalyst CuZnAlGa (CN103263926A), at 200°C, 3500L h -1 kg -1 、H 2 / CO 2 =2 Under reaction conditions, although a higher CO 2 The conversion rate is 30%, but the reaction pressure is as high as 11.0MPa, and the selectivity of methanol is only 69.3%. Obviously, the main problems of Cu-based catalysts are the low conversion rate of carbon dioxide, and the selectivity and yield of methanol are not high.

Although the above copper-based catalysts have good hydrogenation performance, the two main problems facing the industrialization of these catalysts are the easy sintering of the catalyst, unsatisfactory stability and poor thermal conductivity, which lead to hot spots or even overheating in the catalyst bed.

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