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Gold complex catalyst for hydrochlorinating acetylene

A technology for acetylene hydrochlorination and gold complexes, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical/physical processes, etc., can solve environmental pollution and mercury consumption Large and costly issues

Active Publication Date: 2012-08-15
XINJIANG CORPS MODERN GREEN CHLOR ALKALI CHEM ENG RES CENT LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of using highly toxic mercury catalyst in the production of polyvinyl chloride by calcium carbide acetylene method, large consumption of mercury in production, serious environmental pollution, poor stability, short service life and high cost of existing precious metal catalysts; And then provide a kind of good catalytic activity, strong stability, high selectivity, a kind of gold complex non-mercury catalyst for acetylene hydrochlorination with low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The first is to weigh KAu(SCN) 4 Dissolve 0.1665g in 15ml of hot water, add 7g of activated carbon, stir evenly, soak in a water bath at 80°C for 6h, and then dry at 110°C for 10h. Then 0.5610gCuCl 2 2H 2 O was dissolved in 15ml of water, and the above-mentioned dried gold-loaded activated carbon was added, immersed in a water bath at 80°C for 6h, and then dried at 110°C for 10h. This catalyst is used in the synthesis of vinyl chloride by acetylene hydrochlorination, in 360h -1 Under the condition of space velocity, dry with nitrogen gas at 180°C for 30 minutes, then pass through hydrogen chloride for activation for 30 minutes, and finally pass through acetylene to start the reaction. The conversion rate is 99%, and the selectivity is 99%.

Embodiment 2

[0017] The first is to weigh KAu(SCN) 4 Dissolve 0.1000g in 15ml of hot water, then impregnate 7g of activated carbon in it, soak in a water bath at 80°C for 6h, and then dry at 110°C for 10h. Then 2.8210g CoCl 2 ·6H 2 O was dissolved in 15ml of water, and the above-mentioned dried gold-loaded activated carbon was added, immersed in a water bath at 80°C for 6h, and then dried at 110°C for 10h. This catalyst is used in the synthesis of vinyl chloride by acetylene hydrochlorination, in 360h -1 Under the condition of space velocity, dry with nitrogen gas at 180°C for 30 minutes, then pass through hydrogen chloride to activate for 30 minutes, and finally pass through acetylene to start the reaction. The conversion rate is 90% and the selectivity is 98%.

Embodiment 3

[0019] The first is to weigh KAu(SCN) 4 Dissolve 0.0832g in 15ml of hot water, then impregnate 7g of activated carbon in it, soak in a water bath at 80°C for 6h, and then dry at 110°C for 10h. Dissolve 0.4012g of KCl in 15ml of water, add the above-mentioned dried gold-loaded activated carbon, soak in a water bath at 80°C for 6h, and then dry at 110°C for 10h. This catalyst is used in the synthesis of vinyl chloride by acetylene hydrochlorination, in 360h -1 Under the condition of space velocity, dry with nitrogen gas at 180° C. for 30 minutes, then pass through hydrogen chloride for activation for 30 minutes, and finally pass through acetylene to start the reaction. The conversion rate is 91%, and the selectivity is 97%.

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PUM

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Abstract

The invention discloses a gold complex catalyst, and particularly relates to a non-mercury catalyst which is applicable to synthesizing vinyl chloride by acetylene hydrochlorination, and a preparation method of the non-mercury catalyst. The non-mercury catalyst comprises potassium aurate tetra-thiocyanate taken as a main active component, one or a combination of more than two of potassium chloride, copper chloride, cobalt chloride and zinc chloride taken as auxiliary active components, and carrier activated carbon, wherein gold complex accounts for 0.1-2.5% of the weight of the catalyst, and the auxiliary active components account for 0.05-15% of the total weight of the catalyst. According to the gold complex catalyst prepared by the invention, the gold content is lower, so that the cost of noble metal catalyst can be remarkably reduced; and the novel non-mercury catalyst is good in activity, high in stability and strong in selectivity. The gold complex catalyst has the advantages of being simple in production technology, short in production cycle and environment-friendly.

Description

technical field [0001] The invention relates to a gold complex catalyst for acetylene hydrochlorination, in particular to a catalyst suitable for acetylene hydrochlorination to synthesize vinyl chloride. Background technique [0002] Vinyl chloride monomer is an important synthetic raw material for polyvinyl chloride. Polyvinyl chloride is one of the synthetic resins with the largest consumption and output in my country. However, the basic national conditions of our country, which has more coal and less oil, determine that the production of vinyl chloride by acetylene hydrochlorination is still in my country. occupy a dominant position. The main problems facing the synthesis of vinyl chloride by acetylene hydrochlorination are the environmental pollution caused by the use of mercury catalysts and the massive consumption of mercury resources. The mercury mines in major mercury-producing countries in the world have basically been exhausted. Mercury mines have basically been ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/30B01J31/26C07C21/06C07C17/08
Inventor 郑伟玲张传彩夏锐胡文虎陈万银王小艳王小昌李静庞晓东李春华李国栋
Owner XINJIANG CORPS MODERN GREEN CHLOR ALKALI CHEM ENG RES CENT LTD
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