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Molybdenum phosphide catalyst for production of chloroethylene and preparation method thereof

A molybdenum phosphide catalyst, catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, hydrogen halide addition preparation and other directions, can solve problems such as threats to the living environment and mercury pollution in catalysts

Active Publication Date: 2011-08-17
内蒙古海驰高科新材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest shortcoming of the current production process is the pollution of mercury in the catalyst, which poses a huge threat to our living environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] First, 1.56g of ammonium molybdate and 3.7g of sodium hypophosphite were dissolved in 25.0g of deionized water under stirring at room temperature, and then the solution was vacuum-impregnated into 23g of activated carbon carrier and dried at 80°C; then The dried precursor is loaded into the reactor, roasted at 400° C. for 60 min in a nitrogen atmosphere, and drops to room temperature in a nitrogen atmosphere to obtain a catalyst precursor; finally, 20 g of 5% BaCl 2 The solution was vacuum impregnated into the precursor and dried at 120 °C. The resulting sample was named A. Catalyst A is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 67% at 170°C, and the selectivity of vinyl chloride is 56%.

Embodiment 2

[0011] The preparation process is the same as that of catalyst A, except that the amount of sodium hypophosphite is changed to 4.45 g, and other conditions remain unchanged, and the obtained sample is named B. Catalyst B is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 66% at 170°C, and the selectivity of vinyl chloride is 55%.

Embodiment 3

[0013] The preparation process is the same as that of Catalyst A, except that the calcination temperature of the precursor is changed to 500°C, and other conditions remain unchanged. The obtained sample is named C. Catalyst C is used in the reaction of preparing vinyl chloride by hydrochlorination of acetylene, the conversion rate of acetylene is 67% at 170°C, and the selectivity of vinyl chloride is 56%.

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PUM

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Abstract

The invention provides a molybdenum phosphide catalyst for the production of chloroethylene by acetylene hydrochlorination, which is characterized in that: the catalyst uses activated carbon as carrier, MoP as active ingredient and barium chloride as auxiliary. The catalyst provided by the invention belongs to mercury-free catalyst, is green and environmentally-friendly, and has the advantages ofsimple production process, short production period, low cost and the like. The catalyst exhibits superior activity and selectivity in the reaction for preparing chloroethylene by acetylene hydrochlorination.

Description

technical field [0001] The invention proposes a molybdenum phosphide catalyst for producing vinyl chloride by acetylene hydrochlorination, which is characterized in that the carrier of the catalyst is activated carbon, the active component is MoP, and the auxiliary agent is barium chloride. The catalyst proposed by the invention belongs to the mercury-free catalyst, is green and environment-friendly, and has the advantages of simple production process, short production cycle, low cost and the like. The catalyst shows good activity and selectivity in the reaction of acetylene hydrochlorination to vinyl chloride. Background technique [0002] The current energy structure environment in my country determines that the preparation of vinyl chloride by acetylene hydrochlorination is the best way to synthesize polyvinyl chloride (PVC) at present, and it will still be the main production process of vinyl chloride in the next few decades. But the biggest disadvantage of this product...

Claims

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Application Information

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IPC IPC(8): B01J27/19C07C21/06C07C17/08
Inventor 李伟关庆鑫
Owner 内蒙古海驰高科新材有限公司
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