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学科主题: 物理化学
题名: Silicon carbide-derived carbon nanocomposite as a substitute for mercury in the catalytic hydrochlorination of acetylene
作者: Li, Xingyun1;  Pan, Xiulian1;  Yu, Liang1;  Ren, Pengju1;  Wu, Xing2;  Sun, Litao2;  Jiao, Feng1;  Bao, Xinhe1
通讯作者: 潘秀莲 ;  包信和
刊名: NATURE COMMUNICATIONS
发表日期: 2014-04-01
DOI: 10.1038/ncomms4688
卷: 5, 期:1, 页:4688
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
英文摘要: Acetylene hydrochlorination is an important coal-based technology for the industrial production of vinyl chloride, however it is plagued by the toxicity of the mercury chloride catalyst. Therefore extensive efforts have been made to explore alternative catalysts with various metals. Here we report that a nanocomposite of nitrogen- doped carbon derived from silicon carbide activates acetylene directly for hydrochlorination in the absence of additional metal species. The catalyst delivers stable performance during a 150 hour test with acetylene conversion reaching 80% and vinyl chloride selectivity over 98% at 200 degrees C. Experimental studies and theoretical simulations reveal that the carbon atoms bonded with pyrrolic nitrogen atoms are the active sites. This proof- of- concept study demonstrates that such a nanocomposite is a potential substitute for mercury while further work is still necessary to bring this to the industrial stage. Furthermore, the finding also provides guidance for design of carbon- based catalysts for activation of other alkynes.
关键词[WOS]: CHLORIDE MONOMER PRODUCTION ;  SUPPORTED GOLD CATALYST ;  NANOTUBES ;  MECHANISM ;  NANOPARTICLES ;  DEACTIVATION ;  REGENERATION ;  OXIDATION ;  NITRIDE ;  BORON
语种: 英语
WOS记录号: WOS:000335222000004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144235
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Southeast Univ, Minist Educ, Key Lab MEMS, Dept Elect Sci & Engn,SEU FEI Nanopico Ctr, Nanjing 210096, Jiangsu, Peoples R China

Recommended Citation:
Li, Xingyun,Pan, Xiulian,Yu, Liang,et al. Silicon carbide-derived carbon nanocomposite as a substitute for mercury in the catalytic hydrochlorination of acetylene[J]. NATURE COMMUNICATIONS,2014,5(1):4688.
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