Copper complex catalyst for acetylene hydrochlorination reaction and preparation method thereof

A technology for acetylene hydrochlorination and copper complexes, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, catalytic reactions, etc. High cost, difficulty in industrial production, etc., to achieve the effect of low price, low preparation cost and simple preparation method

Inactive Publication Date: 2018-12-14
SHIHEZI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of the noble metal catalyst is that it has good activity and stability, but its economic cost is too high and it is difficult to realize industrial production; the advantage of the base metal catalyst is that it is cheap and suitable for industrial production, but its activity and stability problems have not been solved. Obvious breakthrough

Method used

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  • Copper complex catalyst for acetylene hydrochlorination reaction and preparation method thereof
  • Copper complex catalyst for acetylene hydrochlorination reaction and preparation method thereof
  • Copper complex catalyst for acetylene hydrochlorination reaction and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The specific operation steps are as follows:

[0037] (1) Dissolve the copper salt and the organic phosphoric acid ligand in water or ethanol, and mix them uniformly to obtain a mixed solution; the copper salt includes one of copper chloride, copper nitrate, copper phosphate, copper acetate, copper sulfate or Various; organic phosphoric acid-containing ligands include: one or more of hydroxyethylidene diphosphonic acid, aminotrimethylene phosphonic acid, and ethylenediamine tetramethylene phosphonic acid.

[0038] (2) After mixing the mixed solution and the carrier evenly, impregnate at 20-80°C for 24 hours; the carrier is activated carbon with a specific surface area of ​​500-1500m 2 / g, the mass fraction of ash is less than or equal to 6.0%, including coconut shell charcoal, wood charcoal, or coal-based charcoal.

[0039] (3) drying at 60-120° C. for 24 hours to obtain the copper complex catalyst. The mass fraction of the organic phosphoric acid-containing ligand in...

Embodiment 2

[0042] (1) Dissolve copper chloride dihydrate and aminotrimethylene phosphonic acid (ATMP) in 15 ml of deionized water, stir the mixture for 30 min to obtain a uniform blue solution, and obtain a mixed solution.

[0043] (2) Add the mixed solution dropwise to 3.0 g of coconut shell activated carbon, mix well, stir at 20°C, and impregnate for 24 hours.

[0044] (3) Dry at 80° C. for 24 hours to obtain the copper complex catalyst.

[0045] adjust CuCl 2 And the molar ratio of ATMP, its molar ratio is respectively 1:1, 1:0.75, 1:0.35, and the copper complex catalyst that makes is named as Cu-ATMP / AC, Cu-0.75ATMP / AC, Cu-0.35ATMP respectively / AC. The mass fraction of copper in all catalysts is 5%, and the specific composition contents are shown in Table 1.

[0046] Table 1 Contents of each component in Cu-ATMP / AC, Cu-0.75ATMP / AC, Cu-0.35ATMP / AC

[0047]

[0048] Take 2mL of the above catalyst in a fixed-bed reactor for acetylene hydrochlorination. The reaction conditions a...

Embodiment 3

[0052] The specific operation steps are as follows:

[0053] (1) Dissolve 2 g of copper nitrate, 2 g of copper sulfate and 3 g of hydroxyethylidene diphosphonic acid (HEDP) in 15 ml of deionized water, and mix well to form a uniform mixed solution to obtain a mixed solution.

[0054] (2) Mix the mixed solution with 2.83g of wood charcoal activated carbon, stir evenly, and impregnate at 80°C for 24h.

[0055] (3) Dry at 60° C. for 24 hours to obtain the copper complex catalyst. The mass fraction of the organic phosphoric acid-containing ligand in the copper complex catalyst is 30.5%; the mass fraction of copper element in the copper complex catalyst is 15%.

[0056] A copper complex catalyst for acetylene hydrochlorination described in the embodiments of the present invention and its preparation method have the advantages of simple preparation method, convenient operation and low preparation cost; the prepared catalyst is a base metal catalyst, which is cheap and has Better a...

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Abstract

The invention discloses a copper complex catalyst for an acetylene hydrochlorination reaction and a preparation method thereof. The copper complex catalyst for the acetylene hydrochlorination reactioncomprises a carrier and a copper complex, wherein the copper complex is loaded onto the surface of the carrier; the copper complex is formed by complexing copper salt and an organic phosphate-containing ligand. According to the copper complex catalyst for the acetylene hydrochlorination reaction and the preparation method thereof, the preparation method is simple, the operation is convenient andthe preparation cost is low; the prepared catalyst is a base metal catalyst, is low in price, and has relatively good stability, relatively high conversion rate and relatively high selectivity.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a copper complex catalyst for acetylene hydrochlorination and a preparation method. Background technique [0002] Polyvinyl chloride (PVC) resin is one of the five most widely used plastics in the world, and it is involved in various fields of production and life. Synthesis of vinyl chloride monomer (VCM) is the key to its preparation of polyvinyl chloride. In my country, due to the abundant coal resources, acetylene hydrochlorination has become the main method for the industrial production of vinyl chloride monomer. However, the traditional HgCl used in this method 2 The / AC catalyst is highly toxic and seriously harmful to the ecological environment and human health. Therefore seek to replace HgCl 2 High-efficiency green mercury-free catalyst is an urgent problem to be solved in the chlor-alkali industry. [0003] At present, the research on mercury-free metal catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C17/08C07C21/06
CPCB01J31/1865B01J31/189B01J2231/32B01J2531/16C07C17/08C07C21/06
Inventor 朱明远王雪梅代斌
Owner SHIHEZI UNIVERSITY
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