Catalyst and method for preparing ethylene carbonate from ethylene oxide and carbon dioxide

Abstract

The invention relates to a catalyst for preparing ethylene carbonate from ethylene oxide and carbon dioxide and a method thereof, which mainly solves the problem of low activity of heterogeneous catalysts in the prior art. The present invention comprises a main catalyst and a cocatalyst by using the catalyst; the main catalyst is a metal mixed oxide AaOb / BcOd; wherein, A is selected from at least one of Cu, Mg, Zn, Ca, Co or Ni; B At least one selected from Al, Fe, Cr or Zr; the cocatalyst is a quaternary ammonium salt R1R2R3R4N+X-; the technical scheme that the weight ratio of the cocatalyst to the main catalyst is 0.1 to 10 solves this problem well , can be used in the industrial production of ethylene carbonate.

Description

technical field

[0001] The invention relates to a catalyst for preparing ethylene carbonate from ethylene oxide and carbon dioxide and a method thereof. 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 it 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 / KX etc., these catalysts all have the problem of low ...

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