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Adsorption and reaction of thiophene and H2S on Mo2C/Al2O3 catalyst studied by in situ FT-IR spectroscopy
Wu, WC; Wu, ZL; Feng, ZC; Ying, PL; Li, C
刊名PHYSICAL CHEMISTRY CHEMICAL PHYSICS
2004
DOI10.1039/b414360b
6期:24页:5596-5602
收录类别SCI
文章类型Article
项目归属503
产权排名1;1
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Physics
关键词[WOS]SUPPORTED MOLYBDENUM CARBIDE ; LOW-TEMPERATURE ISOMERIZATION ; MO2N/GAMMA-AL2O3 CATALYST ; NITRIDE CATALYSTS ; CO ADSORPTION ; INFRARED-SPECTROSCOPY ; ADSORBED THIOPHENE ; HYDRODESULFURIZATION ; MO ; ALUMINA
英文摘要The reactions of both thiophene and H2S onMo(2)C/Al2O3 catalyst have been studied by in situ FT-IR spectroscopy. CO adsorption was used to probe the surface sites of Mo2C/Al2O3 catalyst under the interaction and reaction of thiophene and H2S. When the fresh Mo2C/Al2O3 catalyst is treated with a thiophene/H-2 mixture above 473 K, hydrogenated species exhibiting IR bands in the regions 2800-3000 cm(-1) are produced on the surface, indicating that thiophene reacts with the fresh carbide catalyst at relatively low temperatures. IR spectra of adsorbed CO on fresh Mo2C/Al2O3 pretreated by thiophene/H-2 at different temperatures clearly reveal the gradual sulfidation of the carbide catalyst at temperatures higher than 473 K, while H2S/H-2 can sulfide the Mo2C/Al2O3 catalyst surface readily at room temperature (RT). The sulfidation of the carbide surface by the reaction with thiophene or H2S maybe the major cause of the deactivation of carbide catalysts in hydrotreating reactions. The surface of the sulfided carbide catalyst can be only partially regenerated by a recarburization using CH4/H-2 at 1033 K. When the catalyst is first oxidized and then recarburized, the carbide surface can be completely reproduced.
语种英语
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WOS记录号WOS:000225573600021
引用统计
被引频次:13[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/321008/81303
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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Wu, WC,Wu, ZL,Feng, ZC,et al. Adsorption and reaction of thiophene and H2S on Mo2C/Al2O3 catalyst studied by in situ FT-IR spectroscopy[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2004,6(24):5596-5602.
APA Wu, WC,Wu, ZL,Feng, ZC,Ying, PL,&Li, C.(2004).Adsorption and reaction of thiophene and H2S on Mo2C/Al2O3 catalyst studied by in situ FT-IR spectroscopy.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,6(24),5596-5602.
MLA Wu, WC,et al."Adsorption and reaction of thiophene and H2S on Mo2C/Al2O3 catalyst studied by in situ FT-IR spectroscopy".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 6.24(2004):5596-5602.
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