C-SiC loaded platinum-based catalyst, preparation method and applications thereof

Abstract

The present invention discloses a C-SiC composite carrier loaded platinum-based catalyst and a preparation method thereof, and applications of the C-SiC composite carrier loaded platinum-based catalyst in catalytic dehydrogenation reactions of alkyl compounds having more than or equal to a C2-C12 chain. The catalyst comprises, by mass, 96-99.2% of a carrier C-Si, 0.05-2% of a platinum component loaded on the C-SiC, and 0.02-2.0% of an auxiliary agent element loaded on the C-SiC. According to the present invention, the preparation method is simple, feasible and environmentally friendly; compared with the catalyst in the prior art, the C-SiC loaded platinum-based catalyst has the following characteristics that the catalyst integrates the high surface area and the high porosity of the carbon material, the strong interaction between the noble metal Pt and the carbon material, and the like so as to significantly improve the conversion rate of the chain alkyl compound and the selectivity of the corresponding chain alkenyl compound; and the catalyst SiC of the present invention further has excellent thermal conductivity, such that the problems that the local reactor overheating causes the catalyst carbon deposition and deactivation and the like can be avoided.

Description

technical field [0001] The invention relates to a platinum-based catalyst, in particular to a platinum-based catalyst supported by a C-SiC composite carrier. The invention also relates to the preparation method of the C-SiC composite carrier loaded platinum-based catalyst and its application in the dehydrogenation of one or more C2-C12 chain alkyl compounds. Background technique [0002] C2~C12 chain alkyl compounds of cheap C2~C12 (such as ethane, propane, butane, pentane, ethylbenzene, p-diethylbenzene, ethylcyclohexane, etc., sometimes referred to as chain alkyl compounds) The dehydrogenation reaction of C12 alkanyl groups to convert them into corresponding high value-added alkenyl compounds has attracted more and more attention from academia and industry. For example, as important organic chemical raw materials, propylene and butene traditionally mainly come from naphtha steam cracking and heavy oil catalytic cracking units. With the increasing demand for raw materials...

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a C-SiC loaded platinum-based catalyst to solve the problems of low catalyst activity and poor sintering resistance.

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