Alkadiene selective hydrogenation catalyst as well as preparation method and application thereof

Abstract

The invention provides an alkadiene selective hydrogenation catalyst and a preparation method thereof. The carrier of the catalyst adopts carboxyl-functionalized step hole FZIF-8; active components adopts palladium; the active component palladium accounts for 0.1 to 10 percent on the basis of the total weight of the carrier of the catalyst. The invention further provides the preparation method of the alkadiene selective hydrogenation catalyst. A step hole structure is formed in the carrier of the alkadiene selective hydrogenation catalyst, so that carboxyl groups have accessibility, and the active components and the carboxyl groups can interact mutually; the carboxyl groups are contained in the carrier of the catalyst, can anchor the active components, realize high dispersion of the active components, meanwhile prevent agglomeration and drain of the active components during the process, and ensure that the catalyst is high in activity. The catalyst can be applied to the hydrogenation upgrading of FCC petrol, removal of alkadiene in the petrol, and is mild in reaction condition, low in reaction temperature and pressure, and good in selective hydrogenation effect of products.

Description

technical field [0001] The invention relates to a diolefin selective hydrogenation catalyst, a preparation method and application thereof, and belongs to the technical field of catalyst preparation. Background technique [0002] The 21st century is a new era of developed economy and clean environment. The research and development of environmentally friendly clean fuels is one of the most important research topics in green chemistry. [0003] In recent years, the problem of air pollution has become increasingly prominent, and the problem of smog has become more and more serious. China's smog standard was officially implemented on January 1, 2013. However, since 2013, the central and eastern regions of China have been hit by smog. About 7 times the average concentration limit. PM2.5 has increasingly become the focus of public attention. In my country's energy consumption, coal and oil account for about 90%. It is generally believed that coal and oil contribute the most to m...

AI Technical Summary

Problems solved by technology

The active components of conventional catalysts are easy to agglomerate and lose during the reaction process, resulting in a low conversion rate of the hydrogenation catalyst. At the same time, diolefins are easily hydrogenated to form alkanes, resulting in low selectivity of the hydrogenation catalyst, resulting in the generation of a large amount of alkanes, causing serious loss of octane

In order to solve these problems, researchers have developed a series of catalysts for the selective hydrogenation of diolefins in order to increase the hydrogenation conversion rate of the catalyst while improving its hydrogenation selectivity, but the effect is not ideal

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