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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
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2002-02-07
DOI10.1021/jp011577l
Volume106Issue:5Pages:979-987
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordMOLYBDENUM-DISULFIDE CATALYST ; INELASTIC NEUTRON-SCATTERING ; INFRARED-SPECTROSCOPY ; NITRIDE CATALYSTS ; HYDROGEN UPTAKE ; METAL CARBIDES ; MO CATALYSTS ; HYDRODESULFURIZATION ; ALUMINA ; SURFACE
AbstractThe 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.
Language英语
WOS IDWOS:000173692100015
Citation statistics
Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/139127
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
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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