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题名: Fabrication of molybdenum carbide catalysts over multi-walled carbon nanotubes by carbothermal hydrogen reduction
作者: Li, Xiaoyun;  Ma, Ding;  Chen, Limin;  Bao, Xinhe
关键词: molybdenum carbide ;  carbon nanotubes ;  surface oxygen groups ;  molybdenum oxyanion ;  methylcyclohexane dehydrogenation
刊名: CATALYSIS LETTERS
发表日期: 2007-07-01
DOI: 10.1007/s10562-007-9093-x
卷: 116, 期:1-2, 页:63-69
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: Molybdenum carbide catalysts were successfully prepared using original multi-walled carbon nanotubes (MWCNTs) and nitric acid treated ones as support and carbon source by carbothermal hydrogen reduction from 580 degrees C to 700 degrees C. Ammonium heptamolybdate was used as Mo precursor and the effects of oxygen functional groups on MWCNT surface were investigated. TEM and XRD results show that oxygen functional groups act as anchor sites to interact with the Mo oxyanion species during impregnation, which promote the dispersion of Mo precursors. Due to the relatively strong interaction between Mo precursors and MWCNTs, the agglomeration of Mo carbide particles is prevented even when the treatment temperature is as high as 700 degrees C. Moreover, as the support, modified MWCNTs exhibit better thermal resistances. The temperature (580 degrees C) for Mo2C formation over MWCNTs is much lower than that over conventional carbon supports using carbothermal hydrogen reduction. The methylcyclohexane dehydrogenation was used as a probe reaction to test the catalytic performances of the Mo2C catalysts obtained.
关键词[WOS]: ACTIVATED CARBON ;  SURFACE-PROPERTIES ;  SYNTHESIS GAS ;  N-BUTANE ;  SUPPORT ;  ADSORPTION ;  METHANE ;  MO2C ;  HYDRODENITROGENATION ;  CONVERSION
语种: 英语
WOS记录号: WOS:000247932300011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140568
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:
Li, Xiaoyun,Ma, Ding,Chen, Limin,et al. Fabrication of molybdenum carbide catalysts over multi-walled carbon nanotubes by carbothermal hydrogen reduction[J]. CATALYSIS LETTERS,2007,116(1-2):63-69.
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