Process for producing ethylene carbonate

Abstract

The invention relates to a method for producing EC (ethylene carbonate) and mainly solves the problem of low activity of a heterogeneous catalyst in the prior art. The problem is better solved by means of the technical scheme as follows: the method comprises the step that ethylene oxide and carbon dioxide are contacted with a catalyst under the reaction condition, wherein the catalyst is a supported type composite metal oxide catalyst M2O-TO2 / SP; M is at least one of alkaline metal Na, K, Rb or Cs; T is at least one of Ti or Zr; SP is at least one of porous silica, SBA-15, MCM-41, MCF, HMS, alumina or activated carbon; the content of M2O is 1%-20% by weight, the content of TO2 is 5%-30% by weight, and the content of SP is 50%-94% by weight. The method for producing EC can be applied to industrial production of EC prepared from ethylene oxide and carbon dioxide.

Description

technical field

[0001] The present invention relates to a kind of method for producing ethylene carbonate, especially a kind of method for producing ethylene carbonate from ethylene oxide and carbon dioxide. Background technique

[0002] Ethylene carbonate is an excellent solvent and fine chemical intermediate, and a potential basic raw material for organic chemical industry. At the same time, CO 2 Is a greenhouse gas, how to effectively fix has become one of the most challenging issues in this century. And through ethylene oxide and CO 2 Reactive synthesis of ethylene carbonate is one of the good fixation methods. With the recent increasing attention to the co-production of dimethyl carbonate and ethylene glycol using ethylene carbonate as a raw material, the fixation of CO by cyclic carbonate 2 approach has also received increasing attention.

[0003] The heterogeneous catalysts reported so far for the production of cyclic carbonates include MgO, MgO / Al 2 o 3 And Cs...

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