Ru-ni-cu Catalyst for the Synthesis of Vinyl Chloride by Hydrochlorination of Acetylene

A technology of acetylene hydrochlorination and ru-ni-cu, which is applied in the field of mercury-free catalysts and preparations, can solve the problems of inability to realize industrialization, poor activity, and short catalyst life, and achieve good selectivity of reaction products, long life, and side effects The effect of less product

Active Publication Date: 2015-12-09
TIANJIN TIANDI CHUANGZHI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the catalysts currently used are poor in activity, and some have good activity, but the life of the catalyst is short, and it cannot be industrialized

Method used

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  • Ru-ni-cu Catalyst for the Synthesis of Vinyl Chloride by Hydrochlorination of Acetylene

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Embodiment 1

[0017] A Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by hydrochlorination of acetylene, comprising pitch-based spherical activated carbon and ruthenium nitrate III, copper nitrate II and nickel dichloride carried on the pitch-based spherical activated carbon, the quality of Ru Accounting for 0.3% of the mass of the Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by hydrochlorination of acetylene, the molar ratio of Ru, Ni and Cu is 1:3:3.

Embodiment 2

[0019] A Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by hydrochlorination of acetylene, which includes pitch-based spherical activated carbon and ruthenium acetate III supported on the pitch-based spherical activated carbon, copper acetate II and chlorine with a mass ratio of 1:1 The mass of copper chloride II, nickel nitrate, and Ru accounts for 0.1% of the mass of the Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by hydrochlorination of acetylene, and the molar ratio of Ru, Ni and Cu is 1:1:5.

Embodiment 3

[0021] A Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by hydrochlorination of acetylene, comprising powdery activated carbon and ruthenium trichloride, ruthenium sulfate III, and copper sulfate II with a mass ratio of 1:1 carried on the powdery activated carbon and nickel sulfate, the quality of Ru accounts for 0.5% of the mass of the Ru-Ni-Cu catalyst for the synthesis of vinyl chloride by acetylene hydrochlorination, and the molar ratio of Ru, Ni and Cu is 1:5:1.

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Abstract

The invention discloses a Ru-Ni-Cu catalyst for acetylene hydrochlorination synthesis of vinyl chloride. The catalyst comprises a porous inert carrier and the inert porous carrier of ruthenium salts, copper salts and nickel salts supported on the porous inert carrier. Ru accounts for 0.001-5% of the weight of the Ru-Ni-Cu catalyst for acetylene hydrochlorination synthesis of vinyl chloride, and the molar ratio of Ru, Ni and Cu is 1:0.1-10:0.1-10. The invention has the advantages that: for catalysis of acetylene hydrochlorination synthesis of vinyl chloride, the catalyst provided by the invention can reduce the reaction temperature to below 180 DEG C, and the reaction generates product with good selectivity, a small amount of by-products, and has high reaction activity, conversion rate of acetylene over 99% and vinyl chloride selectivity reaching 99.9%. The catalyst provided by the invention has high strength and long service life, and is simple for regeneration treatment after the reaction. The method is simple in preparation process and easy to operate.

Description

technical field [0001] The invention relates to a mercury-free catalyst for synthesizing vinyl chloride by utilizing acetylene and a preparation method thereof. Background technique [0002] With the development of the national economy and the improvement of people's living standards, the demand for polyvinyl chloride is increasing. At present, the mercury-containing catalyst used in the production of vinyl chloride by the calcium carbide method will produce "mercury pollution" on the one hand, and face the problem of lack of mercury resources on the other hand. [0003] At present, the research and development of mercury-free catalysts for acetylene hydrochlorination to vinyl chloride are faced with the problems of catalyst activity and life. Most of the currently used catalysts have poor activity. Although some have good activity, the life of the catalyst is short and cannot be industrialized. For this reason, the current research hopes to improve the performance of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89C07C21/06C07C17/08
Inventor 盛伟刘秉言郑琳
Owner TIANJIN TIANDI CHUANGZHI TECH DEV
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