Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts

doi:10.1007/s40242-015-5172-5

高等学校化学研究 ›› 2015, Vol. 31 ›› Issue (5): 787-791.doi: 10.1007/s40242-015-5172-5

Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts

TANG Cen¹, JIN Yanxia¹, WANG Xiaoxia¹, HU Gengshen¹, XIE Guanqun^1,2, LI Xiaonian², LUO Mengfei¹

1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, P. R. China;
2. Industrial Catalysis Institute of Zhejiang University of Technology, Hangzhou 310014, P. R. China

收稿日期:2015-04-28 修回日期:2015-06-01 出版日期:2015-10-01 发布日期:2015-09-08
通讯作者: XIE Guanqun, E-mail: gqxie@zjnu.edu.cn; LUO Mengfei, E-mail: mengfeiluo@zjnu.cn E-mail:gqxie@zjnu.edu.cn;mengfeiluo@zjnu.cn
基金资助:
Supported by the National Natural Science Foundation of China(No.NSFC-21476207), and the Open Research Fund of Top Key Discipline of Chemistry in Zhejiang Provincial Colleges(Zhejiang Normal University), China(No.ZJHX201413).

Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts

TANG Cen¹, JIN Yanxia¹, WANG Xiaoxia¹, HU Gengshen¹, XIE Guanqun^1,2, LI Xiaonian², LUO Mengfei¹

1. Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua 321004, P. R. China;
2. Industrial Catalysis Institute of Zhejiang University of Technology, Hangzhou 310014, P. R. China

Received:2015-04-28 Revised:2015-06-01 Online:2015-10-01 Published:2015-09-08
Contact: XIE Guanqun, E-mail: gqxie@zjnu.edu.cn; LUO Mengfei, E-mail: mengfeiluo@zjnu.cn E-mail:gqxie@zjnu.edu.cn;mengfeiluo@zjnu.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.NSFC-21476207), and the Open Research Fund of Top Key Discipline of Chemistry in Zhejiang Provincial Colleges(Zhejiang Normal University), China(No.ZJHX201413).

摘要/Abstract

摘要：

The manufacture of 1,1-dichloroethylene(1,1-DCE) usually employs liquid phase method to perform the dehydrochlorination of 1,1,2-trichloroethane(TCE), where large amounts of high-concentration salty wastewater is produced inevitably. It has been a long-term goal to achieve the gas phase synthesis of 1,1-DCE via supported catalysts. In this work, the gas-phase synthesis of 1,1-DCE from TCE was studied in the presence of pentaethylenehexamine(PEHA) supported on silica. High and stable selectivity to 1,1-DCE(up to 98%) was obtained, which could be ascribed to the relatively strong basicity of PEHA according to a proposed E2 mechanism. The formation of PEHA chloride from the HCl generated in situ was detected and was considered to be the main reason for the deactivation of PEHA catalyst.

关键词: 1,1-Dichloroethene, Supported amine catalyst, Dehydrochlorination

Abstract:

Key words: 1,1-Dichloroethene, Supported amine catalyst, Dehydrochlorination

TANG Cen, JIN Yanxia, WANG Xiaoxia, HU Gengshen, XIE Guanqun, LI Xiaonian, LUO Mengfei. Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts[J]. 高等学校化学研究, 2015, 31(5): 787-791.

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Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts

Highly Selective Gas-phase Synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane over Supported Amine Catalysts

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