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FT-IR spectroscopic studies of thiophene adsorption and reactions on Mo2N/gamma-Al2O3 catalysts
Wu, ZL; Li, C; Wei, ZB; Ying, PL; Xin, Q
刊名JOURNAL OF PHYSICAL CHEMISTRY B
2002-02-07
DOI10.1021/jp011577l
106期:5页:979-987
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
关键词[WOS]MOLYBDENUM-DISULFIDE CATALYST ; INELASTIC NEUTRON-SCATTERING ; INFRARED-SPECTROSCOPY ; NITRIDE CATALYSTS ; HYDROGEN UPTAKE ; METAL CARBIDES ; MO CATALYSTS ; HYDRODESULFURIZATION ; ALUMINA ; SURFACE
英文摘要The adsorption and reactions behaviors of thiophene on reduced passivated and nitrided Mo2N/gamma-Al2O3 catalysts have been studied by in situ FT-IR spectroscopy at temperatures from room temperature to 673 K. Thiophene mainly adsorbs on the cus Mo sites of the two catalysts surfaces, and its adsorption mode is determined to be eta(1)(S). Thiophene alone shows no reaction on the two catalysts even at 673 K, while in the presence of H-2, it becomes reactive initially at 573 and 373 K on reduced passivated and nitrided Mo catalysts, respectively, producing a surface a-bonded butene species that is confirmed by the adsorption of 1-butene, cis- and trans-2-butenes, and 1,3-butadiene on the catalysts. Adsorption of CO clearly shows that the catalyst surfaces become sulfided completely with a treatment of thiophene/H-2 at temperatures higher than 573 K. The surface sulfidation together with the sigma-bonded C-4 species may play a role in the deactivation of the nitride catalysts for the HDS of thiophene. The high reactivity of thiophene toward nitrided Mo catalyst in the initial stage of thiophene HDS is ascribed to the high density of surface sites and unique electronic property of nitrided Mo for the activation of both H-2 and thiophene.
语种英语
WOS记录号WOS:000173692100015
引用统计
被引频次:45[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/139127
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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GB/T 7714
Wu, ZL,Li, C,Wei, ZB,et al. FT-IR spectroscopic studies of thiophene adsorption and reactions on Mo2N/gamma-Al2O3 catalysts[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2002,106(5):979-987.
APA Wu, ZL,Li, C,Wei, ZB,Ying, PL,&Xin, Q.(2002).FT-IR spectroscopic studies of thiophene adsorption and reactions on Mo2N/gamma-Al2O3 catalysts.JOURNAL OF PHYSICAL CHEMISTRY B,106(5),979-987.
MLA Wu, ZL,et al."FT-IR spectroscopic studies of thiophene adsorption and reactions on Mo2N/gamma-Al2O3 catalysts".JOURNAL OF PHYSICAL CHEMISTRY B 106.5(2002):979-987.
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