Catalysts used in the synthesis of polyoxymethylene dimethyl ether

Abstract

The invention relates to a catalyst used in the synthesis of polyoxymethylene dimethyl ether, which mainly solves the problems of low catalyst activity and low selectivity in the existing technology of synthesizing polyoxymethylene dimethyl ether using methanol, methylal and paraformaldehyde as reaction raw materials. By using a polyoxymethylene dimethyl ether catalyst, the catalyst is a hybrid material of a sulfonic acid-type polystyrene cation exchange resin and an alloy permanent magnet. The sulfonic acid-type polystyrene cation exchange resin includes a cross-linked polystyrene skeleton. and sulfonic acid groups; the technical solution in which the alloy permanent magnet is selected from at least one of AlNiCoTi38, AlNiCoTi60 and AlNiCoTi72 can be used in the industrial production of polyoxymethylene dimethyl ether.

Description

technical field

[0001] The invention relates to a catalyst used in the synthesis of polyoxymethylene dimethyl ether. Background technique

[0002] In recent years, with the deepening influence of the industrial revolution and my country's unique resource pattern of "more coal, less oil, and gas", my country's oil resources have become increasingly tense, and the pressure on oil supply has increased unprecedentedly. It is estimated that in the next 10 to 20 years, my country's oil supply rate will only be ~50%. How to use our country's rich coal resources to solve our country's energy crisis has become an urgent problem for scientific researchers. Therefore, the development of new oil substitutes from coal-based methanol has attracted increasing attention.

[0003] DME was first proposed as a diesel additive. However, due to its poor cold start performance, high vapor pressure at room temperature, and easy air resistance, the cost of DME as an alternative fuel for vehicles ...

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