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题名: Comparative X-ray photoelectron spectroscopic study on the desulfurization of thiophene by Raney Nickel and rapidly quenched skeletal nickel
作者: Hu, HR;  Qiao, MH;  Xie, FZ;  Fan, KN;  Lei, H;  Tan, D;  Bao, XH;  Lin, HL;  Zong, BN;  Zhang, XX
通讯作者: Zhang XX
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2005-03-24
DOI: 10.1021/jp045119z
卷: 109, 期:11, 页:5186-5192
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 2;5
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The desulfurization of thiophene on Raney Ni and rapidly quenched skeletal Ni (RQ Ni) has been studied in ultrahigh vacuum (UHV) by X-ray photoelectron spectroscopy (XPS). The Raney Ni or RQ Ni can be approximated as a hydrogen-preadsorbed polycrystalline Ni-alumina composite. It is found that thiophene molecularly adsorbs on Raney Ni or RQ Ni at 103 K. At 173 K, thiophene on alumina is desorbed, while thiophene in direct contact with the metallic Ni in Raney Ni undergoes C-S bond scission, leading to carbonaceous species most probably in the metallocycle-like configuration and atomic sulfur. On RQ Ni, the temperature for thiophene dissociation is about 100 K higher than that on Raney Ni. The lower reactivity of RQ Ni toward thiophene is tentatively attributed to lattice expansion of Ni crystallites in RQ Ni due to rapid quenching. The existence of alumina and hydrogen may block the further cracking of the metallocycle-like species on Raney Ni and RQ Ni at higher temperatures, which has been the dominant reaction pathway on Ni single crystals. By 473 K, the C Is peak has disappeared, leaving nickel sulfide on the surface.
关键词[WOS]: CATALYTIC-PROPERTIES ;  ADSORPTION ;  SULFUR ;  ZEOLITES ;  SURFACES ;  COMPLEXES ;  HYDROGEN ;  NI(100) ;  ALLOY ;  FURAN
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000227734500053
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/93109
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.Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China
2.Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Res Inst Petr Proc, Beijing 100083, Peoples R China

Recommended Citation:
Hu, HR,Qiao, MH,Xie, FZ,et al. Comparative X-ray photoelectron spectroscopic study on the desulfurization of thiophene by Raney Nickel and rapidly quenched skeletal nickel[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2005,109(11):5186-5192.
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