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Amphiphilic polymer modified copper acetylene hydrochloride-based catalyst and preparation method thereof

A technology of amphiphilic polymers and copper chloride, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effect of overcoming high cost, overcoming low catalytic stability, and improving stability

Pending Publication Date: 2020-07-10
鄂尔多斯市瀚博科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems faced in the research and development of acetylene hydrochlorination using mercury catalysts and mercury-free catalysts, the purpose of the present invention is to propose a low-cost, high-activity and high-stability amphiphilic polymer-modified acetylene hydrochloride Copper oxide based catalyst and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Dissolve 6.32g of copper chloride, 0.16g of zinc chloride, 0.35g of cobalt chloride and 0.12g of polyvinylpyrrolidone in a 1mol / L hydrochloric acid solution under stirring at room temperature to obtain an impregnating solution; In the activated carbon carrier modified by nitrogen and phosphorus doping, the immersion temperature is a constant temperature of 30°C in a water bath, and the immersion time is 24h; then the filtered activated carbon is washed with deionized water until it is neutral; after drying at 120°C for 8h, Put it into a muffle furnace and bake it under a nitrogen atmosphere at 180°C for 6h. Using this catalyst to catalyze the hydrochlorination of acetylene to synthesize vinyl chloride, the reaction temperature is 130°C and the space velocity is 30h -1 .

Embodiment 2

[0028] Dissolve 10.18g of copper nitrate, 1.06g of zinc nitrate, 0.590g of cobalt nitrate and 0.22g of polyethylene glycol in a 5mol / L hydrochloric acid solution under stirring at room temperature to obtain an impregnating solution; In the activated carbon carrier modified by phosphorus doping, the immersion temperature is a constant temperature of 30°C in a water bath, and the immersion time is 24h; then the filtered activated carbon is washed with deionized water until it is neutral; after drying at 100°C for 15h, put in Baked in a muffle furnace for 5h at 160°C under a nitrogen atmosphere. Using this catalyst to catalyze the hydrochlorination of acetylene to synthesize vinyl chloride, the reaction temperature is 150°C and the space velocity is 50h -1 .

Embodiment 3

[0030] Dissolve 15.16g of copper sulfate, 2.060g of iron sulfate, 1.18g of cadmium sulfate and 0.85g of polypyrrolidone in 8mol / L hydrochloric acid solution with stirring at room temperature to obtain an impregnating solution; In the modified activated carbon carrier, the immersion temperature is a constant temperature of 30°C in a water bath, and the immersion time is 24h; then the filtered activated carbon is washed with deionized water until it is neutral; after drying at 80°C for 20h, put it in a muffle Calcined in a furnace at 200 °C for 3 h under a nitrogen atmosphere. Using this catalyst to catalyze the hydrochlorination of acetylene to synthesize vinyl chloride, the reaction temperature is 150°C and the space velocity is 80h -1 .

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Abstract

The invention discloses a macromolecular amphiphilic polymer modified copper acetylene hydrochloride-based catalyst and preparation thereof. According to the catalyst, nitrogen and phosphorus doped and modified activated carbon is used as a carrier; different types of copper salts are used as main active components, one or more non-noble metal chlorides of groups IA, IIA, VIII, IB and IIB are usedas assistants, and polyethylene glycol, polyvinyl alcohol, polypropylene glycol, polyvinylpyrrolidone and other polymers of different molecular weights are used as the binder. The mercury-free multi-element non-noble metal catalyst provided by the invention shows good catalytic activity and vinyl chloride selectivity in acetylene hydrochlorination reaction, and has high stability. The catalyst has the advantages of simple preparation process, environmental protection, no pollution, high cost performance and the like. Requirements of industrial production are met.

Description

technical field [0001] The invention relates to a preparation technology of a high-molecular polymer modified copper-based catalyst, in particular to a high-molecular amphiphilic polymer-modified acetylene copper hydrochloride-based catalyst and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) has become the most widely used polymer due to its low price and excellent performance. In 2016, China's PVC output exceeded 23 million tons, making it the world's largest PVC producer and consumer. At present, there are three main production processes for the polymerization of PVC monomers, namely ethylene method, ethane method and acetylene method. my country's energy structure of "rich in coal and lack of oil and gas" determines that my country's coal-based national conditions will not change fundamentally in the next few decades, and also determines that the acetylene-based PVC process based on coal resources will occupy a dominant position for a...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/08C07C17/08C07C21/06
CPCB01J27/24B01J37/0018B01J37/082B01J37/088C07C17/08C07C21/06
Inventor 王志文牛强解荣永李杰
Owner 鄂尔多斯市瀚博科技有限公司
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