Catalyst for preparing ethylene carbonate by using ethylene oxide and carbon dioxide

A technology of ethylene carbonate and carbon dioxide, which is applied in the preparation of carbon dioxide or inorganic carbonate, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of easy loss of active components and catalyst activity Low problems, to achieve the effect of good stability and high activity

Active Publication Date: 2013-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem of low catalyst activity and easy loss of active components in the prior art, and a new catalyst for preparing ethylene carbonate from ethylene oxide and carbon dioxide is provided

Method used

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  • Catalyst for preparing ethylene carbonate by using ethylene oxide and carbon dioxide
  • Catalyst for preparing ethylene carbonate by using ethylene oxide and carbon dioxide
  • Catalyst for preparing ethylene carbonate by using ethylene oxide and carbon dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In a 1000ml beaker, add 24.3g Cu(NO 3 ) 2 300 ml of aqueous solution, then add SiO 2 Carrier 100.0 g (Degussa, Aerisol 200, specific surface area 194 m 2 / gram) and 34.2 grams of urea, under stirring, be warming up to 90 DEG C, and keep 2 hours, filter then, after washing 3 times with deionized water, spend the night in 120 DEG C of oven, the solid of gained is called A1. Determined by ICP-AES, where Cu is CuSiO 3 The weight ratio accounting for A1 is 15.8%.

Embodiment 2

[0020] With [Example 1], only Cu(NO 3 ) 2 The dosage is 58.5 g, SiO 2 The carrier is Degussa OX50 with a specific surface area of ​​50 meters 2 / gram, the consumption of urea is 82.7 grams, be heated up to 80 ℃ and keep 9 hours, the solid obtained is called A2. Determined by ICP-AES, where Cu is CuSiO 3 The weight ratio accounting for A2 is 38.2%.

Embodiment 3

[0022] With [Example 1], only Cu(NO 3 ) 2 The dosage is 6.72 g, SiO 2 The carrier is Silica-1 with a specific surface area of ​​526 meters 2 / gram, the consumption of urea is 9.5 grams, and the solid of gained is called A3. Determined by ICP-AES, where Cu is CuSiO 3 Accounting for the weight ratio of A3 is 4.5%.

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Abstract

The invention relates to catalyst for preparing ethylene carbonate by using ethylene oxide and carbon dioxide, mainly aiming at solving the problems that the activity of the existing catalyst is low and the active components are apt to lose in the prior art. The catalyst comprises the following components in parts by weight: a component A: 10-80 parts of metal silicate which is loaded on SiO2 carriers, wherein the weight of the metal silicate is 1-50 percent of the total weight of the component A; and a component B: 20-90 parts of SiO2 which is grafted with alkyl ester silicate CaHbXcSi(OR)3, wherein a is equal to 3-23, b is equal to 7-33, c is equal to 1-3, X is N, P or S, R is -CH3 or -CH2CH3, and the weight ratio of the grafted alkyl ester silicate to the SiO2 is (0.002-0.15):1. By adopting the technical scheme, the problems are better solved and the catalyst can be used for the industrial production of the ethylene carbonate which is prepared by using the ethylene oxide and the carbon dioxide.

Description

technical field [0001] The invention relates to a catalyst 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 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] Most of the methods for the production of cyclic carbonates reported at present are binary homogeneous catalysts using Lewis acid metal compounds and Lewis bases, wherein the Lewis acid metal c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J29/03B01J29/70B01J23/06B01J23/755B01J23/75B01J31/02C07C69/96C07C68/04
CPCY02P20/142Y02P20/141
Inventor 陈梁锋何文军
Owner CHINA PETROLEUM & CHEM CORP
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