Non-mercuric catalyst used in hydrochlorination of acetylene and method for preparing vinyl chloride by using catalyst

A non-mercury catalyst, acetylene hydrochlorination technology, applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, hydrogen halide addition preparation, etc., can solve problems such as poor stability of non-mercury catalysts , to achieve the effect of pollution-free environment, good stability and long service life

Inactive Publication Date: 2011-04-27
EAST CHINA UNIV OF SCI & TECH
View PDF0 Cites 55 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

How to break through the technical bottleneck of poor stability of non-mercury catalysts is a problem that researchers at home and abroad pay close attention to in this field

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 0.2015g Au(en) 2 Cl 3 , add 50ml of water to dissolve, dubbed the solution. Then weigh 10.5g of 20-40 mesh dry activated carbon, pour it into the beaker containing the above solution, stir it electromagnetically for 6 hours (h), put it on a water bath and evaporate it to dryness, then place it in an oven and dry it at 150°C for 6 hours , the catalyst for the hydrochlorination of acetylene can be obtained. Before use, pass through hydrogen chloride gas to activate for 2 hours, and then pass through acetylene gas for reaction. At a reaction temperature of 180°C and under normal pressure, the raw material molar ratio of acetylene to hydrogen chloride is 1:1.15, and the space velocity is 400ml g cat -1 h -1 time response. The catalytic performance is shown in Table 1.

Embodiment 2

[0022] Weigh 0.2215g Au(PPh 3 )Cl was dissolved in dichloromethane to form a solution. Operate by embodiment 1 method. The catalytic performance is shown in Table 1.

Embodiment 3

[0024] Weigh 0.3091g HAuCl 4 4H 2 O and 0.0218g BaCl 2 , dubbed into an aqueous solution. Operate as in Example 1 except that the reaction is performed at a temperature of 120°C. The catalytic performance is shown in Table 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a non-mercuric catalyst used in hydrochlorination of acetylene and a method for preparing vinyl chloride by using the catalyst. The non-mercuric catalyst used in hydrochlorination of acetylene for preparing vinyl chloride comprises main active ingredients-gold salts, auxiliary active ingredients-non precious metal salts and a carrier, wherein the main active ingredients are gold salts and can be halides, complexes and the like of gold; gold in the gold salts accounts for 0.1-10% by weight of the catalyst; the auxiliary active ingredients are non precious metal salts and can be halides, acetates, phosphates, complexes and the like of potassium, barium, lanthanum and copper; the non precious metal salts account for 0.1-10% by weight of the catalyst; and the carrier is activated carbon, comprising coconut shell carbon, coal carbon, nutshell carbon or silica gel. The non-mercuric catalyst can be prepared by the conventional impregnation method, has simple preparation method, is environment-friendly and has the advantages of less by-products, good stability and long service life. The conversion rate of acetylene can be 90-99% and the selectivity of vinyl chloride is not lower than 99%.

Description

technical field [0001] The invention relates to a non-mercury catalyst for preparing vinyl chloride by hydrochlorination of acetylene and a method for preparing vinyl chloride using the catalyst. Background technique [0002] Vinyl chloride is a monomer for the synthesis of polyvinyl chloride, and polyvinyl chloride is one of the world's top five engineering plastics, and there is a large demand worldwide. At present, most of the industrialized production of vinyl chloride synthesis in the world adopts the ethylene method, but in my country, the vinyl chloride production has long been dominated by the acetylene method, especially at the current stage, with the increasing energy consumption, coal chemical industry is becoming more and more popular Attention, rapid development. In this energy background, compared with the ethylene method derived from the petrochemical route, the process of preparing vinyl chloride based on the acetylene method based on the coal chemical route ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J31/24B01J27/138B01J31/30B01J31/26B01J27/10B01J27/122B01J31/04C07C21/06C07C17/08
Inventor 沈本贤肖卫国王声洁刘建文赵基钢王华伟王雷宋庆雷
Owner EAST CHINA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap