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题名: Reaction performance and characterization of Co/Al2O3 Fischer-Tropsch catalysts promoted with Pt, Pd and Ru
作者: Xu, DY;  Li, WZ;  Duan, HM;  Ge, QJ;  Xu, HY
关键词: Fischer-Tropsch synthesis ;  cobalt ;  alumina ;  noble metal ;  hydrogen spillover
刊名: CATALYSIS LETTERS
发表日期: 2005-08-01
DOI: 10.1007/s10562-005-5861-7
卷: 102, 期:3-4, 页:229-235
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: A series of noble metal (Pt, Ru or Pd) promoted Co/Al2O3 catalysts were prepared by sequential impregnation method. The catalysts were characterized by XRD, TPR, H-2-TPD and TPSR techniques, and their catalytic performance in Fischer-Tropsch synthesis was investigated in a fixed-bed reactor. The results of activity measurements show that the addition of small amounts of noble metal greatly improved the activity of the Co/Al2O3 catalyst. TPR experimental results demonstrate that hydrogen spillover from the noble metal to cobalt oxide clusters facilitated the reduction of cobalt oxide and, thus significantly increased the reducibility of Co/Al2O3 catalyst. The presence of noble metal increased the amount of chemisorbed hydrogen and weakened the bond strength of Co-H. TPSR results indicate that CO was adsorbed in a more reactive state on the promoted catalysts.
关键词[WOS]: COBALT-ALUMINA CATALYSTS ;  SUPPORTED COBALT ;  CO HYDROGENATION ;  CARBON-MONOXIDE ;  METAL-CATALYSTS ;  PLATINUM ;  RHENIUM ;  TPR ;  REDUCIBILITY ;  KINETICS
语种: 英语
WOS记录号: WOS:000230515600021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139734
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, Nat Gas Utilizat & Appl Catalysis Lab, Dalian 116023, Peoples R China

Recommended Citation:
Xu, DY,Li, WZ,Duan, HM,et al. Reaction performance and characterization of Co/Al2O3 Fischer-Tropsch catalysts promoted with Pt, Pd and Ru[J]. CATALYSIS LETTERS,2005,102(3-4):229-235.
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