Mercury-free catalyst for acetylene hydrochlorination

A non-mercury catalyst, acetylene hydrochlorination technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve the problem of poor dispersion of precious metal catalysts and medium mercury consumption Large amount, poor stability and other problems, to achieve the effect of high selectivity, high reactivity and strong stability

Inactive Publication Date: 2016-01-20
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

[0004] The present invention provides a non-mercury catalyst for acetylene hydrochlorination, which solves the problem of using a highly toxic mercury catalyst in the production of polyvinyl chloride by calcium carbide acetylene method under relatively economical conditions, which leads to large consumption of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1:

[0016] Weigh 3.44 g of ammonium vanadate and dissolve it in 30 ml of hot water; weigh 15.00 g of activated carbon and pour it into the prepared ammonium vanadate solution. Evaporate to dry at 60℃ water bath and dry at 105℃. The composite carrier was calcined in a nitrogen atmosphere at 300°C for 3 hours and cooled. Weigh 2.00 g of copper chloride dihydrate and dissolve it in 30 ml of warm water. Pour the prepared composite carrier into the prepared copper chloride solution. Evaporate to dryness in a water bath at 60°C and dry at 105°C to obtain a non-mercury catalyst for acetylene hydrochlorination.

Example Embodiment

[0017] Example 2:

[0018] Weigh 5.00 g of titanium dioxide powder, weigh 15.00 g of activated carbon powder, add water and a binder, mix, shape, and dry to obtain a composite carrier. Weigh 3.00g zinc chloride and 2g potassium nitrate, and dissolve them in 30ml warm water to make a mixed solution. Pour the prepared composite carrier into the prepared copper chloride solution. Evaporate to dryness in a water bath at 50°C and dry at 110°C to obtain a non-mercury catalyst for acetylene hydrochlorination.

Example Embodiment

[0019] Example 3:

[0020] Weigh 5.00 g of ammonium molybdate and dissolve it in 35 ml of hot water; weigh 15.00 g of activated carbon and pour it into the prepared ammonium vanadate solution. Evaporate to dry at 65°C and dry at 115°C. The composite carrier was calcined in a nitrogen atmosphere at 500°C for 5 hours and cooled. Weigh 2.00 g of copper sulfate pentahydrate, 1.5 g of manganese chloride tetrahydrate, and 1.0 g of barium chloride, and dissolve them in 35 ml of warm water to obtain a mixed solution of the three substances. Pour the prepared composite carrier into the prepared mixed solution. Evaporate to dryness in a water bath at 65°C and dry at 115°C to obtain a non-mercury catalyst for acetylene hydrochlorination.

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PUM

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Abstract

The invention discloses a mercury-free catalyst and especially relates to a mercury-free catalyst for acetylene hydrochlorination synthesis of vinyl chloride. The mercury-free catalyst comprises a composite carrier composed of active carbon and a metal oxide, and at least one of cobalt, manganese, copper, zinc, bismuth, barium and potassium as active ingredients. The mercury-free catalyst utilizes the composite carrier composed of active carbon and metal oxide, has dual properties of active carbon carriers and metal oxide carriers and has high acetylene hydrochlorination catalytic activity. Through interaction of the composite carrier and the active ingredient, the catalyst can produce weak and fast chemisorption of hydrogen chloride (as acetylene hydrochlorination raw material gas) so that the mercury-free catalyst for acetylene hydrochlorination is obtained. Through special properties of the composite carrier and special action of the active ingredient and the composite carrier, the catalyst has high reaction activity and is a novel mercury-free catalyst with good activity, strong stability and high selectivity. The mercury-free catalyst has the advantages of simple production processes, short production period and low production cost.

Description

technical field [0001] The invention relates to a catalyst, in particular to a non-mercury catalyst for acetylene hydrochlorination. Background technique [0002] Polyvinyl chloride is one of the five major synthetic resins in the world, widely used in important areas of the national economy such as industry, agriculture, and building materials. Vinyl chloride monomer is an important raw material for organic chemical synthesis. Its main purpose is to produce polyvinyl chloride resin and other vinyl chloride copolymers. With the development of social economy, its demand is increasing day by day. The sources of vinyl chloride mainly include calcium carbide acetylene method, petroleum ethylene method and dichloroethane cracking method. my country's energy structure of "short of oil, poor in gas, and rich in coal" determines that the production of polyvinyl chloride by calcium carbide acetylene has become the mainstream. [0003] The catalyst used in industry is a mercury cata...

Claims

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Application Information

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IPC IPC(8): B01J23/847B01J23/80B01J23/889B01J23/78B01J23/888C07C21/06C07C17/08
Inventor 王小昌谢东阳王小艳阳小东李国栋周军
Owner XINJIANG CORPS MODERN GREEN CHLOR ALKALI CHEM ENG RES CENT LTD
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