Polyoxymethylene dimethyl ether catalyst

A dimethyl ether and catalyst technology, applied in the field of polyoxymethylene dimethyl ether catalyst, can solve the problems of high cost of paraformaldehyde, low catalyst reaction efficiency, etc., and achieve the effect of good yield
CN106582863BActive Publication Date: 2019-10-08CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2019-10-08

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Abstract

The invention relates to a catalyst for polyoxymethylene dimethyl ether. The catalyst is mainly used for solving the problem of processes for synthesizing the polyoxymethylene dimethyl ether from methanol, methylal and paraformaldehyde in the prior art that catalysts are low in activity and low in selectivity. Through adopting the technical scheme that the catalyst for the polyoxymethylene dimethyl ether is a hybrid material of sulfonic acid type polystyrene cation exchange resin and permanent-magnetic ferrite, the sulfonic acid type polystyrene cation exchange resin comprises a crosslinked polystyrene skeleton and a sulfonic acid group, and the permanent-magnetic ferrite is at least one selected from BaFe12O19, Pm3Fe5O12 and Sm3Fe5O12, the catalyst can be applied to the industrial production of the polyoxymethylene dimethyl ether.
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Description

technical field

[0001] The invention relates to a polyoxymethylene dimethyl ether catalyst. 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 has increased significant...

Claims

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