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The origin of the extraordinary stability of mercury catalysts on the carbon support: the synergy effects between oxygen groups and defects revealed from a combined experimental and DFT study

文献类型：期刊论文

作者Li, Jian1; Fan, Jiangtao1; Ali, Sajjad2; Lan, Guojun1; Tang, Haodong1; Han, Wenfeng1; Liu, Huazhang1; Li, Bo2; Li, Ying1
刊名CHINESE JOURNAL OF CATALYSIS
出版日期2019-02-01
卷号40期号:2页码:141-146
关键词Mercury catalysts Thermal stability Defects Oxygen groups Acetylene hydrochlorination
ISSN号0253-9837
通讯作者Li, Bo(boli@imr.ac.cn) ; Li, Ying(liying@zjut.edu.cn)
英文摘要Thermal stability of HgCl2 has a pivotal importance for the hydrochlorination reaction as the loss of mercuric compounds is toxic and detrimental to environment. Here we report a low-mercury catalyst which has durability over 10000 h for acetylene hydrochlorination under the industrial condition. The stability of the catalyst is carefully analyzed from a combined experimental and density functional theory study. The analysis shows that the extraordinary stability of mercury catalyst is resulted from the synergy effects between surface oxygen groups and defective edge sites. The binding energy of HgCl2 is increased to be higher than 130 kJ/mol when adsorption is at the edge site with a nearby oxygen group. Therefore, the present study revealed that the thermal stability problem of mercury-based catalyst can be solved by simply adjusting the surface chemistry of activated carbon. Furthermore, the reported catalyst has already been successfully applied in the commercialized production of vinyl chloride. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
资助项目Qihe Investigation Company
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000457815900001
出版者SCIENCE PRESS
资助机构Qihe Investigation Company
源URL[http://ir.imr.ac.cn/handle/321006/131492]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Bo; Li, Ying
作者单位1.Zhejiang Univ Technol, Inst Ind Catalysis, Hangzhou 310014, Zhejiang, Peoples R China
2.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jian,Fan, Jiangtao,Ali, Sajjad,et al. The origin of the extraordinary stability of mercury catalysts on the carbon support: the synergy effects between oxygen groups and defects revealed from a combined experimental and DFT study[J]. CHINESE JOURNAL OF CATALYSIS,2019,40(2):141-146.
APA Li, Jian.,Fan, Jiangtao.,Ali, Sajjad.,Lan, Guojun.,Tang, Haodong.,...&Li, Ying.(2019).The origin of the extraordinary stability of mercury catalysts on the carbon support: the synergy effects between oxygen groups and defects revealed from a combined experimental and DFT study.CHINESE JOURNAL OF CATALYSIS,40(2),141-146.
MLA Li, Jian,et al."The origin of the extraordinary stability of mercury catalysts on the carbon support: the synergy effects between oxygen groups and defects revealed from a combined experimental and DFT study".CHINESE JOURNAL OF CATALYSIS 40.2(2019):141-146.

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来源：金属研究所

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