Copper phosphide catalyst for synthesizing chloroethylene and preparation method thereof

A synthesis method and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, hydrogen halide addition preparation, etc., can solve the problems of waste of production resources, achieve short production cycle, simple production process, good activity and selective effect

Active Publication Date: 2011-08-17
内蒙古海驰高科新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the production of vinyl chloride by mercury-free catalysts is mainly focused on changing the production process of vinyl chloride, mainly on the transformation of existing production processes and equipment, which has caused a huge waste of production resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] First, 3.44g of copper chloride and 4.28g of sodium hypophosphite were dissolved in 25.0g of deionized water under stirring at room temperature, and then the solution was impregnated into 23g of activated carbon carrier and dried at 60°C; then the dried The dried precursor is loaded into a reactor, roasted at 250° C. for 60 min in a nitrogen atmosphere, and drops to room temperature in a nitrogen atmosphere to obtain a catalyst precursor; finally, 20 g of 5% BaCl 2 The solution was vacuum impregnated into the precursor and dried at 120 °C. The resulting sample was named A. Catalyst A is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 64% at 170°C, and the selectivity of vinyl chloride is 53%.

Embodiment 2

[0011] The preparation process is the same as that of catalyst A, except that the amount of sodium hypophosphite is changed to 6.43 g, and other conditions remain unchanged, and the obtained sample is named B. Catalyst B is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 64% at 170°C, and the selectivity of vinyl chloride is 53%.

Embodiment 3

[0013] The preparation process is the same as that of Catalyst A, except that the calcination temperature of the precursor is changed to 400°C, and other conditions remain unchanged. The obtained sample is named C. Catalyst C is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 66% at 170°C, and the selectivity of vinyl chloride is 56%.

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PUM

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Abstract

The invention discloses a copper phosphide catalyst for synthesizing chloroethylene, which is characterized in that the carrier of the catalyst is active carbon, the active component is Cu3P and the auxiliaries comprise one or more of copper chloride, nickel chloride and barium chloride. The catalyst disclosed by the invention is green, simple in production process and short in production period and shows excellent activity and selectivity in the reaction of synthesizing chloroethylene via the hydrochlorination of acetylene.

Description

technical field [0001] The invention proposes a copper phosphide catalyst for producing vinyl chloride, which is characterized in that: the carrier of the catalyst is activated carbon, and the active component is Cu 3 P, the auxiliary agent is one or more of copper chloride, nickel chloride, barium chloride. The catalyst proposed by the invention is green and environment-friendly, has a simple production process and a short production cycle. The catalyst shows good activity and selectivity in the synthesis of vinyl chloride by acetylene hydrochlorination. Background technique [0002] As we all know, polyvinyl chloride (PVC), as one of the five major synthetic resins, plays a very important role in people's daily life and production, and its demand is increasing year by year with the continuous progress and development of society. At present, the vast majority of vinyl chloride in my country is prepared by acetylene hydrochlorination. Due to the current mercury pollution a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/185C07C21/06C07C17/08
Inventor 李伟
Owner 内蒙古海驰高科新材有限公司
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