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Low noble metal mercury-free catalyst for acetylene hydrochlorination reaction, preparation method and application thereof

A technology of acetylene hydrochlorination and mercury catalyst, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., which can solve the problem of high catalyst cost and achieve simple preparation process , low cost, good stability

Active Publication Date: 2014-07-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current literature reports, the loading of these noble metals is more than 0.05% to obtain high activity and stability, so the catalyst cost is high, and industrial applications face huge economic problems.

Method used

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Examples

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Effect test

preparation example Construction

[0039] The preparation method of catalyst of the present invention can carry out according to following preferred embodiment:

[0040] First dry the activated carbon carrier in an oven at 120°C for 24 hours, then take a certain amount of activated carbon carrier for use; weigh a certain amount of one or more soluble salts of precious metals and a certain amount of one or more common The soluble salt of the metal is dissolved in a certain amount of methanol or ethanol to obtain the catalyst impregnation solution. The quality of methanol or ethanol is twice the mass of the activated carbon carrier; the above-mentioned activated carbon carrier is placed in the catalyst impregnation solution for 24 hours, and then heated at 120 The catalyst was dried under the condition of ℃ for 24 hours to obtain the finished catalyst.

preparation Embodiment 1

[0044] Dry the activated carbon carrier in an oven at 120°C for 24 hours, then take 97.8 grams of activated carbon carrier for later use; measure 4 ml of chloroauric acid ethanol solution with a gold content of 0.01 g / ml, and measure copper chloride with a copper content of 0.1 g / ml 10 milliliters of ethanol solution was dissolved in 200 milliliters of ethanol to obtain a catalyst impregnating solution; the above activated carbon carrier was placed in the catalyst impregnating solution and impregnated for 24 hours, then dried at 120°C for 24 hours to obtain a catalyst containing 0.04% gold, 1 % copper of the finished mercury-free catalyst, evaluated by Reaction Example 1.

preparation Embodiment 2

[0046] Dry the activated carbon carrier in an oven at 120°C for 24 hours, then take 97.4 grams of activated carbon carrier for use; measure 2 ml of chloroauric acid methanol solution with a gold content of 0.01 g / ml, and measure copper chloride with a copper content of 0.1 g / ml 8 milliliters of methanol solution was dissolved in 200 milliliters of methanol to obtain a catalyst impregnation solution; the above-mentioned activated carbon carrier was placed in the catalyst impregnation solution and impregnated for 24 hours, and then dried at 120°C for 24 hours to obtain a catalyst containing 0.02% gold, 0.8 % copper of the finished mercury-free catalyst, evaluated by Reaction Example 2.

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Abstract

This invention relates to a low noble metal mercury-free catalyst for a vinyl chloride synthesis reaction through an acetylene hydrochlorination reaction, a preparation method and an application thereof. The catalyst comprises an active carbon carrier and a mixed active component comprising one or a plurality of noble metal compounds and one or a plurality of general metal compounds according to a certain ratio, wherein the mass content of the noble metal is 0.01-0.04%, and the mass content of the general metal is 0.1-1%. The low noble metal mercury-free catalyst has characteristics of low noble metal content, low catalyst cost, high catalyst activity and long service life.

Description

technical field [0001] The invention relates to a low-noble metal mercury-free catalyst for acetylene hydrochlorination and a preparation method thereof, and a method for preparing vinyl chloride by using the low-noble metal mercury-free catalyst of the invention to catalyze acetylene hydrochlorination. Background technique [0002] The reaction of acetylene and hydrogen chloride can produce vinyl chloride, which is a monomer used in the synthesis of polyvinyl chloride plastic (PVC). The synthesis of vinyl chloride monomer is of great significance to the PVC industry. At present, the industrial production process uses activated carbon-loaded mercuric chloride as a catalyst, and the reaction temperature is 100-200°C. With the development of social economy, the output of polyvinyl chloride plastics is increasing, and the consumption of catalyst is also increasing. Mercury is a toxic substance that seriously pollutes the environment. Therefore, the reaction process of synthes...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J37/02C07C21/06C07C17/08
Inventor 徐云鹏李铭芝刘中民周军李国栋陈万银庞晓东张传彩孙新德白长敏李世英
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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