Preparation method of anti-sintering methanol synthesis catalyst

Abstract

The invention belongs to the technical field of catalysis, and particularly relates to a preparation method of an anti-sintering methanol synthesis catalyst. The method comprises the following steps:preparing a catalyst precursor a containing copper oxide and zinc oxide by using a co-precipitation process; covering the catalyst precursor a by a precipitate of silicon and aluminum by a chemical deposition process to obtain a catalyst precursor b; and treating the catalyst precursor b by an auxiliary agent, and performing molding to obtain the catalyst. According to the method provided by the invention, the methanol synthesis catalyst prepared by the method has good thermal stability, especially in a high-temperature methanol synthesis reaction, and the active specific surface area of the catalyst and the methanol yield can be well maintained.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a preparation method of a sintering-resistant methanol synthesis catalyst. Background technique [0002] With the rapid development of MTO, MTP, MTA and MTG, as well as the downstream product technology of methanol as a raw material for hydrogen production of new energy vehicles, it has driven the great development of the entire methanol industry, and at the same time promoted the development of large methanol technology. Methanol synthesis catalyst is the core technology of methanol production. With the specific application requirements of methanol synthesis feed gas, process and product methanol, many stringent requirements are put forward for methanol synthesis catalyst. Among them, methanol synthesis catalyst needs continuous improvement. The thermal stability of the synthesized catalyst, mainly to improve the anti-sintering performance of the active component m...

AI Technical Summary

Problems solved by technology

The former can play a positive role to a certain extent, but due to the large number of components, it puts forward higher requirements for the uniformity and quality stability of the catalyst product

In addition, due to the large number of components, there are many synergistic effects, the analysis of the catalyst mechanism and the influence of element composition on the performance of the catalyst, and based on these analysis results, a series of in-depth and systematic studies such as guiding catalyst replacement have brought complexity.

The latter can indeed play a role in improving the heat resistance of the catalyst, and the selectivity of methanol can basically meet the production requirements, but the activity of the catalyst is low, and the single-pass conversion rate of raw materials is low. In production, the circulation volume needs to be increased to meet the production capacity requirements. High energy consumption and poor economy

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