Process for the preparation of ethylene carbonate

Abstract

The invention relates to a method for preparing ethylene carbonate and mainly solves the problem of low activity of heterogeneous catalysts in the prior art. The method comprises the step of contacting ethylene oxide and carbon dioxide with a catalyst under reaction conditions; the catalyst contains 5wt%-40wt% of alkaline-earth metal based on MO and 60wt%-95wt% of a phosphorus aluminum oxide carrier APO. With adoption of the technical scheme, the problems are better solved, and the method can be used for preparation of ethylene carbonate from ethylene oxide and carbon dioxide in industrial production.

Description

technical field

[0001] The present invention relates to a kind of method for preparing vinyl acid ester, especially a kind of method for preparing ethylene carbonate with 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 / K...