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Perovskite compound chloride catalyst and application thereof

A perovskite type, chloride technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve environmental pollution, deactivation, and gold catalyst costs Advanced problems, to achieve the effect of high catalytic activity, good selectivity and good stability

Active Publication Date: 2015-07-01
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of existing mercury catalysts used for the synthesis of vinyl chloride by acetylene hydrochlorination, which are easy to sublimate and deactivate and seriously pollute the environment, the cost of gold catalysts is high and easily deactivated by acetylene reduction, and other metal catalysts have low activity. To provide a composite chloride catalyst with high activity and selectivity and good stability with a perovskite structure and its application in the synthesis of vinyl chloride by acetylene hydrochlorination

Method used

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  • Perovskite compound chloride catalyst and application thereof
  • Perovskite compound chloride catalyst and application thereof
  • Perovskite compound chloride catalyst and application thereof

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Embodiment 1

[0030] According to the loads listed in Table 1 and their proportions, the metered copper chloride, cesium chloride or the third metal chloride are dissolved in deionized water, and after all the solids are dissolved, they are added dropwise to the The method mentioned in the pretreatment of the above-mentioned carrier uses the activated carbon (the specific surface area is 1390m 2 / g) with continuous stirring, the solution wetted the activated carbon and left it at room temperature for 2 hours, and then dried the sample at a temperature of 110°C for 12 hours to prepare the composite chloride CsCuCl with activated carbon-supported perovskite structure 3 Catalyst No.3-10 (perovskite structure composite chloride CsCuCl 3 The XRD characteristic peak sees figure 2 ).

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Abstract

The invention discloses a perovskite compound chloride catalyst and application thereof. The catalyst comprises a carrier, a copper-cesium compound chloride of a perovskite structure loaded on the carrier or a copper-cesium compound chloride doped with a third metal chloride, wherein the third metal is selected from one of Sn, Mn, Bi, Ba, Sr, Zn and In and the carrier is selected from active carbon, a nitrogen-containing carbon material, a carbon nano tube and graphene; and the mass ratio of the carrier to the copper element to the cesium element to the third metal is 100 to (0.5-10) to (0.5-12) to (0-1). The perovskite compound chloride catalyst disclosed by the invention is applied to hydrochlorinating acetylene to synthesize chloroethylene, and has the advantages of high catalytic activity, good chloroethylene selectivity, good stability and long service life.

Description

(1) Technical field [0001] The present invention relates to the composite chloride catalyst of perovskite structure prepared by copper chloride and cesium chloride or the third metal chloride and copper chloride and cesium chloride, and its reaction in the synthesis of vinyl chloride by acetylene hydrochlorination in the application. (2) Background technology [0002] Vinyl chloride is the monomer of polyvinyl chloride, a versatile general-purpose plastic. In the synthesis of vinyl chloride by hydrochlorination of acetylene, activated carbon-supported mercuric chloride catalyst has the characteristics of good activity and high selectivity of vinyl chloride, and is widely used in the industrial production of vinyl chloride synthesis by hydrochlorination of acetylene. However, mercuric chloride is highly toxic and is easily sublimated and lost during the use of the catalyst, resulting in a decrease in catalyst activity; on the other hand, in the process of preparing, using an...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/835B01J23/889B01J23/843C07C21/06C07C17/02
Inventor 李小年赵佳丰枫张桐桐许江涛狄晓霞张群峰卢春山马磊许孝良姚楠
Owner ZHEJIANG UNIV OF TECH
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