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Process for producing ethylene carbonate

A technology of ethylene carbonate and ethylene oxide, which is applied in the field of producing 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, good technical effect and stable catalyst properties. Effect

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

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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 producing ethylene carbonate is provided

Method used

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  • Process for producing ethylene carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 3.7g of sodium nitrate and 7.0g of zirconium nitrate pentahydrate and dissolve it in 100ml of water, and dissolve 10g of porous SiO 2 (Degussa Aerosil 200) was added therein, heated to 90°C and evaporated to dryness, dried overnight in an oven at 120°C, and then calcined in a muffle furnace at 550°C for 4 hours to obtain the supported mixed metal oxide catalyst M 2 O-TO 2 / SP-1, where M 2 The weight content of O is 10.1%, TO 2 The weight content of SP is 14.9%, and the weight content of carrier SP is 75.0%.

Embodiment 2

[0022] Catalyst preparation step is identical with [embodiment 1], and the catalyst that just used M metal salt is 2.0g salt of wormwood obtains is M 2 O-TO 2 / SP-2.

Embodiment 3

[0024] Catalyst preparation step is the same as [Example 1], except that the M metal salt used is 1.8g cesium nitrate, and the catalyst obtained is M 2 O-TO 2 / SP-3.

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D317/38B01J23/04B01J29/03
CPCB01J23/002B01J23/04B01J29/0308B01J2229/183B01J2229/20B01J2523/00C07D317/38B01J2523/12B01J2523/41B01J2523/48B01J2523/13B01J2523/15B01J2523/47B01J2523/31
Inventor 陈梁锋何文军
Owner CHINA PETROLEUM & CHEM CORP
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