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Catalyst for preparing divinylacetylene by acetylene trimerization

A technology of divinyl and catalysts, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, organic chemistry, etc., can solve problems such as waste of resources

Inactive Publication Date: 2012-08-01
中国平煤神马控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional process, it is directly used as fuel, resulting in a great waste of resources

Method used

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  • Catalyst for preparing divinylacetylene by acetylene trimerization

Examples

Experimental program
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Effect test

Embodiment 1

[0019] A catalyst for the preparation of divinylacetylene by trimerization of acetylene, the catalyst consists of 40g of cuprous chloride, 3.1g of [Bmim]Br, 30g of methylamine hydrochloride and 61.7g of N-methylpyrrolidone.

[0020] Utilize above-mentioned catalyst to prepare the method for divinyl acetylene, this method comprises the steps:

[0021] ①Preparation of solution: at 40°C, feed nitrogen into the bubble reactor to remove the air, add organic amine hydrochloride, organic ionic liquid and additives in proportion, after mixing evenly, seal the bubble reactor, and continue Inject nitrogen to remove air (emptying time 30 minutes);

[0022] ② Dissolution of cuprous chloride: heat up to 80°C, add cuprous chloride in proportion, continue to feed nitrogen, and stir to dissolve completely;

[0023] ③Trimerization reaction: After the raw materials in the bubbling reactor are fully mixed, replace nitrogen with acetylene (the space velocity of acetylene is 110 ml·gcat -1 h -1...

Embodiment 2

[0026] The difference from Example 1 is that the quality of cuprous chloride used is 60g.

Embodiment 3

[0028] The difference from Example 1 is that the quality of cuprous chloride used is 80g.

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Abstract

The invention relates to a catalyst for preparing divinylacetylene by acetylene trimerization. The catalyst consists of cuprous chloride, organic ion liquid, organic amine hydrochloride and an aid, wherein the aid is N'N-dimethylformamide or N-methyl pyrrolidone; and a mass ratio of the cuprous chloride to the organic ion liquid to the organic amine hydrochloride to the aid is 5.3:(0.2-1.5):(2.0-5.3):(4.1-8.5). Experiments prove that the catalyst has high catalytic activity of ethylene trimerization and selectivity of the divinylacetylene.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a catalyst for preparing divinylacetylene by trimerization of acetylene. Background technique [0002] Divinyl acetylene is a by-product of the production of neoprene, and as an organic substance, it contains a lot of heat energy. In the traditional process, it is used directly as fuel, resulting in a great waste of resources. At present, the more advanced method is to use it as a waterproof material for houses, but because divinyl acetylene is only a by-product in the production process of neoprene, there are few studies on its application, but there are double bonds in its molecular formula And three bonds, so that it has a very broad application potential. [0003] Currently divinyl acetylene is mainly derived from by-products of chloroprene rubber. my country's current consumption of chloroprene rubber is about 50,000 tons per year, and the output of by-produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/30C07C11/28C07C2/38
Inventor 郑晓广张明林健梁巍颜英杰李世强
Owner 中国平煤神马控股集团有限公司
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