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题名: Dibenzothiophene hydrodesulfurization activity and surface sites of silica-supported MoP, Ni2P, and Ni-Mo-P catalysts
作者: Sun, FX;  Wu, WC;  Wu, ZL;  Guo, J;  Wei, ZB;  Yang, YX;  Jiang, ZX;  Tian, FP;  Li, C
关键词: hydrodesulfurization ;  transition metal phosphides ;  MoP ;  Ni2P ;  NiMoP ;  dibenzothiophene ;  IR spectroscopy ;  CO adsorption
刊名: JOURNAL OF CATALYSIS
发表日期: 2004-12-10
DOI: 10.1016/j.jcat.2004.09.002
卷: 228, 期:2, 页:298-310
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Silica-supported binary and ternary phosphides, MoP/SiO2, Ni2P/SiO2, and Ni-Mo-P/SiO2 have been prepared and characterized by X-ray diffraction (XRD), BET surface area, CO chemisorption, transmission electron microscopy (TEM), and infrared spectroscopy (IR). The hydrodesulfurization (HDS) activities of dibenzothiophene (DBT) were measured and compared at 593 K and 3.0 MPa for MoP/SiO2, Ni2P/SiO2, and Ni-Mo-P/SiO2 catalysts with different Mo and Ni loadings. The activities of the phosphides follow the order Ni2P/SiO2 > Ni-Mo-P/SiO2 > MOP/SiO2. The Ni sites in the Ni-MO-P/SiO2 catalysts play a major role in the conversion of DBT, and the activity of the catalysts increases with increasing Ni content. This is different from sulfides, nitrides, and carbides, as no synergetic effect is observed between the phosphided Ni and the Mo atoms. The surface of these phosphide catalysts is partially sulfided forming a surface phosphosulfide phase, while the bulk structure of the phosphides is maintained in the HDS reactions. (C) 2004 Elsevier Inc. All rights reserved.
关键词[WOS]: TRANSITION-METAL PHOSPHIDES ;  MAGNETIC-RESONANCE SPECTROSCOPY ;  CARBON-MONOXIDE ;  THIOPHENE HYDRODESULFURIZATION ;  MOLYBDENUM PHOSPHIDE ;  TUNGSTEN PHOSPHIDE ;  PHOSPHORUS PROMOTION ;  CO ADSORPTION ;  NICKEL ;  HYDRODENITROGENATION
语种: 英语
WOS记录号: WOS:000225661200005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139379
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:
Sun, FX,Wu, WC,Wu, ZL,et al. Dibenzothiophene hydrodesulfurization activity and surface sites of silica-supported MoP, Ni2P, and Ni-Mo-P catalysts[J]. JOURNAL OF CATALYSIS,2004,228(2):298-310.
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