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Method for preparing ethylene carbonate from ethylene oxide and carbon dioxide

A technology of ethylene carbonate and ethylene oxide, which is applied in the field of preparing ethylene carbonate from ethylene oxide and carbon dioxide, can solve the problems of low activity of heterogeneous catalysts, and achieves the advantages of not easy to run off, stable catalyst properties, and good technical effects. Effect

Active Publication Date: 2020-01-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is that there is a problem of low activity of heterogeneous catalysts in the prior art, and a new method for preparing ethylene carbonate from ethylene oxide and carbon dioxide is provided

Method used

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  • Method for preparing ethylene carbonate from ethylene oxide and carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 8.5g of magnesium nitrate hexahydrate and 7.0g of zirconium nitrate pentahydrate and dissolve them in 100ml of water, and dissolve 10g of porous SiO 2 (Degussa Aerosil 200) was added to it, heated to 90°C and evaporated to dryness, dried overnight in an oven at 120°C, and then roasted in a muffle furnace at 550°C for 4 hours to obtain the supported mixed metal oxide catalyst MO-TO 2 / SP-1, wherein the weight content of MO is 10.2%, TO 2 The weight content of the carrier SP is 14.8%, and the weight content of the carrier SP is 75.0%.

Embodiment 2

[0022] The catalyst preparation steps are the same as in [Example 1], except that the M metal salt used is 7.1g magnesium acetate tetrahydrate, and the catalyst obtained is MO-TO 2 / SP-2.

Embodiment 3

[0024] The catalyst preparation steps are the same as in [Example 1], except that the M metal salt used is 5.1 g calcium nitrate tetrahydrate, and the obtained catalyst is MO-TO 2 / SP-3.

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Abstract

The invention relates to a method for producing ethylene carbonate from ethylene oxide and CO2 and mainly solves the problem that heterogeneous catalysts have low activity in the prior art. The methodcomprises the step of contacting ethylene oxide and CO2 with a catalyst under the reaction condition, wherein the catalyst is a supported compound e metal oxide catalyst MO-TO2 / SP; M is at least oneof alkaline earth metals Mg, Ca, Sr and Ba; T is at least one of Ti and Zr; SP is at least one of porous silicon oxide, SBA-15, MCM-41, MCF, HMS, aluminum oxide and activated carbon; the weight content of MO is 1%-20%, the weight content of TO2 is 5%-30% and the weight content of SP is 50%-94%. With the adoption of the technical scheme, the problem is better solved and the method can be applied toindustrial production of preparation of ethylene carbonate from ethylene oxide and CO2.

Description

technical field [0001] The invention relates to a method for preparing 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 / KX etc., these catalysts all have the problem of low catalytic activity. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D317/38B01J23/02B01J21/10B01J29/03
CPCB01J21/10B01J23/002B01J23/02B01J29/0308B01J2229/183B01J2229/20B01J2523/00C07D317/38B01J2523/22B01J2523/41B01J2523/48B01J2523/23B01J2523/25B01J2523/47B01J2523/31
Inventor 陈梁锋何文军
Owner CHINA PETROLEUM & CHEM CORP
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