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Noble metal catalyst for compounding chloroethylene through hydrochlorination of acetylene and preparation method thereof

A technology for synthesizing vinyl chloride and noble metal catalysts by hydrochlorination of acetylene, which is applied in the field of catalysis, can solve the problems of difficult industrialization and high catalyst cost, and achieve the effects of easy industrial production, low cost, and cost reduction

Active Publication Date: 2017-06-13
中国平煤神马控股集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the active components are mostly precious metals such as gold, palladium, ruthenium, platinum, etc., and the catalyst cost is high, so it is difficult to realize industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0025] A preparation method for a noble metal catalyst for acetylene hydrochlorination to synthesize vinyl chloride, comprising the following steps:

[0026] (1) Add 3.0g of silver chloride to 40ml of ammonia water at room temperature, fully dissolve with ultrasonic vibration, then add 20ml of distilled water and mix well;

[0027] (2) Add 60.0g of activated carbon to the homogeneously mixed solution described in step (1), and then place it in a 90°C water bath and evaporate to dryness to obtain AgCl / C;

[0028] (3) Take 3.0g of cuprous chloride and dissolve it in 30ml of concentrated hydrochloric acid at room temperature. After it is completely dissolved, add 20ml of distilled water and mix well;

[0029] (4) Inject the concentrated hydrochloric acid solution of cuprous chloride mixed uniformly in step (3) into the beaker containing AgCl / C described in step (2) for immersion for 10 hours. Evaporate to dryness in a water bath at 80°C to obtain AgCl / C containing copper compone...

preparation Embodiment 2

[0032] A preparation method for a noble metal catalyst for acetylene hydrochlorination to synthesize vinyl chloride, comprising the following steps:

[0033] (1) Add 1.8g of silver chloride to 40ml of ammonia water at room temperature, fully dissolve with ultrasonic vibration, then add 20ml of distilled water and mix well;

[0034] (2) Add 60.0g of activated carbon to the homogeneously mixed solution described in step (1), and then place it in a 90°C water bath and evaporate to dryness to obtain AgCl / C;

[0035] (3) Take 2.4g of copper chloride and 0.6g of magnesium chloride and dissolve them in 30ml of concentrated hydrochloric acid at room temperature. After they are completely dissolved, add 20ml of distilled water and mix well;

[0036] (4) Inject the concentrated hydrochloric acid solution of copper chloride and magnesium chloride mixed uniformly in step (3) into the beaker filled with AgCl / C described in step (2) for immersion for 8 hours. After the immersion is complete...

preparation Embodiment 3

[0039] A preparation method for a noble metal catalyst for acetylene hydrochlorination to synthesize vinyl chloride, comprising the following steps:

[0040] (1) Add 4.8g of silver chloride to 40ml of ammonia water at room temperature, fully dissolve with ultrasonic vibration, then add 20ml of distilled water and mix well;

[0041] (2) Add 60.0g of activated carbon to the homogeneously mixed solution described in step (1), and then place it in a 95°C water bath and evaporate to dryness to obtain AgCl / C;

[0042] (3) Take 1.8g of bismuth chloride and 1.8g of zinc chloride and dissolve in 30ml of concentrated hydrochloric acid at room temperature. After they are completely dissolved, add 20ml of distilled water and mix well;

[0043] (4) Inject the concentrated hydrochloric acid solution of bismuth chloride and zinc chloride mixed uniformly in step (3) into the beaker containing AgCl / C described in step (2) for 6 hours of immersion. Place it in a water bath at 90°C and evaporat...

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PUM

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Abstract

The invention discloses a noble metal catalyst for compounding chloroethylene through hydrochlorination of acetylene and a preparation method thereof. The catalyst contains a mixed active component which is formed by activated carbon carrier, noble metal compound and common metal compound at a certain ratio; the content of the noble metal compound is 0.5-20% of the mass of activated carbon; the content of the common metal compound is 0.5-20% of the mass of activated carbon; the noble metal compound is dissolved in ammonium hydroxide and is uniformly mixed, and then the activated carbon is added and is dried by distillation; the mixture of uniformly mixed common metal compound and concentrated hydrochloric acid is injected, uniformly mixed, dried by distillation and sintered, thereby acquiring the product. The catalyst prepared according to the invention is green and environment-friendly; the catalyst has higher activity and selectivity in hydrochlorination of acetylene; the by-products are few; the production process is simple; the cost is low; according to the invention, the low-cost silver chloride is used as an active component, so that the cost of the catalyst is obviously reduced and the industrial production is easy.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a mercury-free catalyst for acetylene hydrochlorination and a preparation method thereof, in particular to a noble metal catalyst for acetylene hydrochlorination to synthesize vinyl chloride and a preparation method thereof. Background technique [0002] The industrial synthesis methods of vinyl chloride monomer mainly include acetylene hydrochlorination and ethylene oxychlorination. In my country, about 70% of vinyl chloride monomer is produced by acetylene hydrochlorination, which is determined by my country's special energy structure, and the process route of acetylene hydrochlorination has always used highly toxic mercuric chloride / Activated carbon is a catalyst, and the catalyst is volatile and lost, which has caused serious harm to the health of workers, that is, the surrounding environment. Therefore, how to eliminate mercury catalyst pollution and clean the process rout...

Claims

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Application Information

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IPC IPC(8): B01J27/13B01J27/138C07C17/08C07C21/06
CPCB01J27/13B01J27/138C07C17/08C07C21/06
Inventor 海国栋池吉安靳鹏王旭峰张静吴祖杰周能王宁王国贞李飞陈茜茹谷小虎庞向阳李欣平雷佑安
Owner 中国平煤神马控股集团有限公司