XPS Study on  Adsorptive  Desulfurization of Thiophene over Rapidly Quenched Skeletal Ni

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XPS Study on Adsorptive Desulfurization of Thiophene over Rapidly Quenched Skeletal Ni

XIE Fu-Zhong¹, HU Hua-Rong¹, QIAO Ming-Hua¹, YAN Shi-Run¹, FAN Kang-Nian¹, LEI Hao², TAN Da-Li², BAO Xin-He², ZONG Bao-Ning³, ZHANG Xiao-Xin³

1. Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China;
2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
3. Research Institute of Petroleum Processing, Beijing 100083, China

Received:2005-09-20 Revised:1900-01-01 Online:2006-09-10 Published:2006-09-10
Contact: FAN Kang-Nian

Abstract

Abstract: The adsorptive desulfurization of thiophene on rapidly quenched skeletal Ni(RQ Ni) was investigated by XPS. At 298 K, thiophene in direct contact with RQ Ni undergoes C—S bond scission, forming metallocycle-like species and atomic sulfur on metallic nickel. Further exposure to thiophene leads to physisorbed thiophene. At 373 K, most of the physisorbed thiophene desorbs, with a small portion undergoing sulfur abstraction on the newly exposed nickel surface. The existence of alumina and hydrogen may block the further cracking of the metallocycle-like species at higher temperatures, which has been considered to be the dominant reaction pathway on Ni single crystals. At 473 K, the C_1s peak disappears, leaving nickel sulfide on the surface.

Key words: Rapidly quenched Ni, Thiophene, Adsorptive desulfurization, XPS

CLC Number:

O643.1

TrendMD:

XIE Fu-Zhong¹, HU Hua-Rong¹, QIAO Ming-Hua¹, YAN Shi-Run¹, FAN Kang-Nian¹, LEI Hao², TAN Da-Li², BAO Xin-He², ZONG Bao-Ning³, ZHANG Xiao-Xin³. XPS Study on Adsorptive Desulfurization of Thiophene over Rapidly Quenched Skeletal Ni
[J]. Chem. J. Chinese Universities, doi: .

References

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