Solid catalyst for synthesizing butadiene from alcohol, and preparation and application thereof

Abstract

The invention relates to a solid catalyst for synthesizing butadiene from alcohol. The solid catalyst comprises a meso-porous silicon carrier, an oxidizing active ingredient and a condensation dehydration active ingredient, wherein the oxidizing active ingredient and the condensation dehydration active ingredient are loaded on the meso-porous silicon carrier; the oxidizing active ingredient contains transition metal silicate; the condensation dehydration active ingredient contains transition metal oxide; through being metered by the mass of the meso-porous silicon carrier, the content of the transition metal element in the oxidizing active ingredient is 0.5 to 25.0 weight percent; the content of the transition metal element in the condensation active ingredient is 0.5 to 10.0 weight percent. The invention also relates to a preparation method of the solid catalyst. The catalyst prepared by the invention has the advantages that the adverse influence between the transition metal elements in the oxidizing active ingredient and the condensation dehydration active ingredient is eliminated, so that the activity and the stability of the catalyst are improved; meanwhile, the catalyst has good water resistance.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a solid catalyst for synthesizing butadiene from ethanol and its preparation and application. Background technique [0002] At present, there are two main sources of butadiene in the world. One is from refinery C 4 Distillate dehydrogenation, this method is currently only used in a few countries with rich butane and butene resources. The other is the mixed C produced from the ethylene cracker 4 This method is cheap and economically advantageous, and it is currently the main source of butadiene in the world. However, in recent years, with the increasing depletion of petroleum resources as a non-renewable resource and the impact on the decline in 1,3-butadiene production brought about by shale gas exploitation, it is of great significance to develop new butadiene production process routes. [0003] The research on ethanol-catalyzed preparation of butadiene can be ...

AI Technical Summary

Problems solved by technology

In the above method, the catalysts all have the problems of low butadiene selectivity and short life. The main reason is that the reaction is a multi-step series reaction, and high catalytic activity requires good coordination between the components. One is the active component The second is that the existing catalyst synthesis methods are to load the active components with oxidation and condensation functions on the carrier through the loading method, which will lead to the mutual influence between the active components of oxidation and condensation functions, thus affecting Butadiene selectivity and lifetime

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