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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
Li, Jian1; Fan, Jiangtao1; Ali, Sajjad2; Lan, Guojun1; Tang, Haodong1; Han, Wenfeng1; Liu, Huazhang1; Li, Bo2; Li, Ying1
Corresponding AuthorLi, Bo(boli@imr.ac.cn) ; Li, Ying(liying@zjut.edu.cn)
2019-02-01
Source PublicationCHINESE JOURNAL OF CATALYSIS
ISSN0253-9837
Volume40Issue:2Pages:141-146
AbstractThermal 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.
KeywordMercury catalysts Thermal stability Defects Oxygen groups Acetylene hydrochlorination
Funding OrganizationQihe Investigation Company
Indexed BySCI
Language英语
Funding ProjectQihe Investigation Company
WOS Research AreaChemistry ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
WOS IDWOS:000457815900001
PublisherSCIENCE PRESS
Citation statistics
Cited Times:14[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/131497
Collection中国科学院金属研究所
Corresponding AuthorLi, Bo; Li, Ying
Affiliation1.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
Recommended Citation
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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