Catalyst for preparing chloroethylene through acetylene hydrochlorination

A technology for the production of vinyl chloride and catalysts by chlorination, which is applied in the direction of physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, hydrogen halide addition preparation, etc., which can solve poor safety, short life, and low activity And other problems, to achieve the effect of not easy to lose and prolong life

Inactive Publication Date: 2013-06-26
冯良荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Aiming at the characteristics of poor safety, low activity and short service life of existing non-mercury catalysts, the present invention proposes a solution to use high-stable metal complexes as active centers of acetylene hydrochlorination catalysts for vinyl chloride production

Method used

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  • Catalyst for preparing chloroethylene through acetylene hydrochlorination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Carbon carrier: activated carbon, bulk density 0.50g / ml, BET specific surface area 387m 2 / g, particle size 3.5~4.0mm, particle length 3~10mm. Measure 40ml of this activated carbon.

[0036] Active component: weigh CuCl 2 2.70 g of 2H2O (chemically pure, molecular weight 170.48, content 99%) was dissolved in about 30 ml of distilled water. Weigh 3.50 g of 1,10-phenanthroline (molecular weight 198.22 analytically pure, water content 10%) and dissolve it in about 30 ml of absolute ethanol to obtain solution B.

[0037] Catalyst: Pour the dried activated carbon into solution A and dry it again in a drying oven; then pour the dried activated carbon into solution B and dry it again in a drying oven.

[0038] Phenomenon: good activity, no loss of ligand.

Embodiment 2

[0040] Carbon carrier: activated carbon, bulk density 0.50g / ml, BET specific surface area 387m 2 / g, particle size 3.5~4.0mm, particle length 3~10mm. Measure 40 ml of the activated carbon, raise the temperature to 750° C., and treat it with ammonia gas and water vapor for 40 minutes.

[0041] Active ingredient: Weigh 0.016mol of nickel porphyrin and dissolve it in about 50ml of hot ethanol to obtain solution A.

[0042] Catalyst: Activated carbon is poured into solution A and dried in a drying oven; then the dried activated carbon is poured into solution B and dried in a drying oven again.

[0043] Phenomenon: good activity, no loss of ligand.

Embodiment 3

[0045] Carbon carrier: activated carbon, bulk density 0.38g / ml, BET specific surface area 1091m 2 / g, particle size 2.5mm, particle length 2-5mm.

[0046] Catalyst: prepare 50ml of 0.016mol copper chloride aqueous solution, impregnate the above-mentioned activated carbon, dry, then add 12g of phthalic anhydride, 12g of urea, seal the autoclave, heat at 280°C for 24h, take it out and wash it with distilled water for 5 times, then wash with ethanol 5 times, dry. Then, evaluation was performed using the aforementioned evaluation device.

[0047] Phenomenon: relatively high activity, no loss of ligand or organic base.

[0048] Table 1. Catalyst evaluation results

[0049]

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Abstract

The invention provides a mercury-free and precious metal-free catalyst for preparing chloroethylene through acetylene hydrochlorination. The catalyst is prepared by loading a metallic element complex on a carbon carrier such as activated carbon, graphite, graphene or a carbon nano tube; and a ligand of the metallic element complex is a bidentate, tridentate, quadridentate, quinquidnetate or hexadentate ligand, wherein at least one ligating atom is a nitrogen atom which contains a double bond, and the complexing power of the ligand and metal elements is more than the complexing power of H<+1>.

Description

technical field [0001] The invention provides a mercury-free and noble metal-free acetylene hydrochlorination catalyst, which is used for the reaction of acetylene and hydrogen chloride gas to synthesize vinyl chloride. Background technique [0002] Polyvinyl chloride (PVC) is one of the five major thermoplastic synthetic resins, and its output and consumption rank first among the five major synthetic resins in China. According to statistics, in 2010, the national demand for PVC reached 12 million tons, and the output reached 11.28 million tons. Almost all (more than 98%) of vinyl chloride monomer is used to produce polyvinyl chloride resin, and the rest is used to produce polyvinyl chloride chloride and chlorinated solvents. The technical level of producing vinyl chloride monomer directly affects the quality, production cost and market competitiveness of polyvinyl chloride resin. [0003] At present, there are two main preparation processes for the production of industria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07C21/06C07C17/08
Inventor 冯良荣张淑清甘亚
Owner 冯良荣
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