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题名: Activated carbon supported bimetallic CoMo carbides synthesized by carbothermal hydrogen reduction
作者: Liang, CH;  Ma, WP;  Feng, ZC;  Li, C
关键词: activated carbon ;  heat treatment, impregnation ;  mass spectrometry, x-ray diffraction
刊名: CARBON
发表日期: 2003
DOI: 10.1016/S0008-6223(03)00169-6
卷: 41, 期:9, 页:1833-1839
收录类别: SCI
文章类型: Article
部门归属: 503
项目归属: 503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: A carbothermal hydrogen reduction method was employed for the preparation of activated carbon supported bimetallic carbide. The resultant samples were characterized by BET surface area measurement, X-ray diffraction, and temperature-programmed reduction-mass spectroscopy. The results showed that nanostructured beta-Mo2C can be formed on the activated carbon by carbothermal hydrogen reduction above 700 degreesC. The particle sizes of beta-Mo2C increase with increasing reaction temperatures and Mo loading. The bimetallic CoMo carbide can be synthesized by the carbothermal hydrogen reduction even around 600 degreesC. The bimetallic CoMo carbide is from carbothermal hydrogen reduction of CoMoO4 precursor and is easily formed when the Co/Mo molar ratio is 1.0. Separation of the bimetallic CoMo carbide phase into Mo carbide and Co metal occurs when the temperature of the reduction is above 700 degreesC. The addition of a second metal such as Co and Ni, decreases the formation temperature of carbide because the second metal promotes formation of CHx species from reactive carbon atoms or groups on carbon material and hydrogen, which further carburizes oxide precursors. (C) 2003 Elsevier Science Ltd. All rights reserved.
关键词[WOS]: TRANSITION-METAL CARBIDES ;  SURFACE-AREA ;  CATALYTIC PROPERTIES ;  SILICON-CARBIDE ;  MOLYBDENUM ;  TUNGSTEN ;  BULK
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000183818100016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82903
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

Recommended Citation:
Liang, CH,Ma, WP,Feng, ZC,et al. Activated carbon supported bimetallic CoMo carbides synthesized by carbothermal hydrogen reduction[J]. CARBON,2003,41(9):1833-1839.
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