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Composite copper-based catalyst, preparation method and application thereof in the production of vinyl chloride

A technology of copper-based catalysts and additives, applied in the direction of catalyst activation/preparation, hydrogen halide addition preparation, chemical instruments and methods, etc., can solve problems such as carbon deposition, short life, poor stability, etc., and achieve simple process and short production cycle Short, good stability effects

Active Publication Date: 2019-05-31
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

In the prior art, most of the non-precious metal catalysts have problems such as serious carbon deposition, short service life and poor stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a composite copper-based catalyst A, the preparation method is as follows:

[0033] Add 100 parts of coconut shell activated carbon into 1mol / L phosphoric acid solution, stir at 70°C for 4 hours, wash with deionized water until neutral, and dry at 120°C for later use. Weigh 10 parts of copper chloride and 5 parts of cerium chloride and dissolve them in 60g of deionized water, add 100 parts of acid-treated activated carbon, dry at 40°C after soaking for 12 hours; bake at 300°C for 5 hours in 150mL / min helium flow Obtain catalyst, and gained catalyst is named composite copper-based catalyst A.

Embodiment 2

[0035] This example provides a composite copper-based catalyst B. The preparation method is the same as that of the composite copper-based catalyst A, except that the carrier is coal-based activated carbon, and other conditions remain unchanged. The obtained sample is named composite copper-based catalyst B.

Embodiment 3

[0037] This example provides a composite copper-based catalyst C. The preparation method is the same as that of the composite copper-based catalyst A, except that the acid is hydrochloric acid, and other conditions remain unchanged. The obtained sample is named composite copper-based catalyst C.

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PUM

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Abstract

The invention provides a composite copper-based catalyst, a preparation method and an application thereof in the production of vinyl chloride. The preparation method of the composite copper-based catalyst includes the following steps: soaking acid-treated activated carbon in a solution containing copper salt and an auxiliary agent, and drying and roasting to obtain the composite copper-based catalyst, wherein the auxiliary agent is one or more of ferric chloride, cerium chloride, tin chloride, barium chloride, manganese chloride, zinc chloride, cobalt chloride, lanthanum chloride, nickel chloride, bismuth chloride and potassium chloride; and the mass ratio of the acid-treated activated carbon, the copper salt and the auxiliary agent is 100: 5: 1-100: 10: 5. The catalyst is environment-friendly, low in cost, simple in process and short in production period. The catalyst shows high activity, selectivity and good stability in the reaction of hydrochlorination of acetylene to produce the vinyl chloride, and is expected to be a good substitute for a mercury catalyst.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, more specifically, to a composite copper-based catalyst, a preparation method and its application in the production of vinyl chloride. Background technique [0002] Polyvinyl chloride (PVC), as one of the five general-purpose synthetic resins, is one of the pillar products for the development of the petrochemical industry. my country's unique resource and energy structure of "rich in coal, poor in oil, and low in gas" determines that the production of PVC in my country is dominated by the calcium carbide method, and the calcium carbide method PVC industry still uses mercuric chloride catalyst (mercuric chloride content up to 11%) as a catalyst for the synthesis of acetylene and HCl. This leads to a large consumption of mercury resources, and a large amount of mercury volatilizes into the atmosphere during use, causing serious pollution. In the "Minamata Convention on Mercury", the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J23/80B01J37/02B01J37/08C07C17/08C07C21/06
Inventor 牛强夏伟赵长森
Owner 鄂尔多斯市瀚博科技有限公司
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