Acetylene dimerization nonaqueous phase catalyst as well as preparation method and application thereof

A catalyst and non-aqueous phase technology, which is applied in the preparation of acetylene dimerization catalysts and in the field of catalyst preparation. It can solve the problems of low vinyl acetylene conversion rate and low selectivity of acetylene, and achieve less time, low cost and high selectivity. high effect

Active Publication Date: 2015-01-14
ANHUI ANQING SHUGUANG CHEM GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the acetylene conversion rate and vinyl acetylene selectivity of current acetylene dimerization non-aqueous catalysts are still low and need to be improved.

Method used

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  • Acetylene dimerization nonaqueous phase catalyst as well as preparation method and application thereof
  • Acetylene dimerization nonaqueous phase catalyst as well as preparation method and application thereof
  • Acetylene dimerization nonaqueous phase catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Preparation of acetylene dimerization non-aqueous phase catalyst

[0029] Measure 55ml of dimethylformamide and pour it into a two-necked flask, add 25g of ethylamine hydrochloride to it after heating to 60°C, place the two-necked flask in a constant temperature water bath on a magnetic stirrer (constant temperature 60°C) , and put a magnetic stirring rotor into it, and the rotating speed is maintained at 1000-1300 rpm. After the ethylamine hydrochloride was completely dissolved, nitrogen was introduced into one mouth of the two-neck flask, and 55 g of CuCl and 1 g of triphenylphosphine were sequentially added into the other mouth. The above mixture was stirred for 30 min to obtain the desired non-aqueous phase catalyst.

Embodiment 2-14

[0031] According to the raw material composition in the following table, the preparation method of Example 1 was repeated to prepare the acetylene dimerization non-aqueous catalysts of Examples 2-14.

[0032] Catalyst Effect Evaluation

[0033] The catalyst prepared by embodiment 1-14 is evaluated according to the following methods:

[0034] In the bubbling bed device, the catalysts prepared in Examples 1-14 were used to carry out acetylene dimerization reaction, and then the gas obtained by the reaction was collected, wherein the reaction conditions were: reaction temperature 65 ° C, reaction pressure was normal pressure, acetylene space velocity was 200h -1 (ratio of acetylene volume flow to catalyst volume). Then, Agilent 1790 type gas chromatography was used to analyze the composition of the collected gas samples, so as to obtain the amounts of acetylene and vinyl acetylene in the collected gas samples. Among them, the chromatographic column used is a 30m×0.53mm glass c...

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PUM

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Abstract

The invention provides an acetylene dimerization nonaqueous phase catalyst as well as a preparation method and application thereof. The acetylene dimerization nonaqueous phase catalyst contains an active component namely CuCl, a latent solvent, a phosphine ligand and an organic solvent. The acetylene dimerization nonaqueous phase catalyst can be effectively applied to acetylene dimerization reaction.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to the technical field of acetylene dimerization reaction catalyst preparation. Specifically, the present invention relates to a non-aqueous phase catalyst for acetylene dimerization and its preparation method and use. More specifically, the present invention provides a non-aqueous phase catalyst for acetylene dimerization, a method for preparing a non-aqueous phase catalyst for dimerization of acetylene, a method for preparing vinyl acetylene, and a vinyl acetylene product. Background technique [0002] Vinyl acetylene can be used in the production of chemical products such as chloroprene rubber, 4-chlorophthalic anhydride, and vinyl polymers, as well as the production of many traditional petrochemical products, which can effectively alleviate the impact of the current industrial production on the petrochemical industry. dependency. Therefore, it is of great signific...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/24C07C11/30C07C2/38
Inventor 韩明汉刘建国左宜赞汪展文
Owner ANHUI ANQING SHUGUANG CHEM GRP
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