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Operando QEXAFS studies of Ni2P during thiophene hydrodesulfurization: direct observation of Ni-S bond formation under reaction conditions

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Title: Operando QEXAFS studies of Ni2P during thiophene hydrodesulfurization: direct observation of Ni-S bond formation under reaction conditions
Authors: Wada, Takahiro Browse this author
Bando, Kyoko K. Browse this author
Miyamoto, Takeshi Browse this author
Takakusagi, Satoru Browse this author
Oyama, S. Ted Browse this author
Asakura, Kiyotaka Browse this author →KAKEN DB
Keywords: EXAFS
quick-EXAFS
hydrodesulfurization
operando XAFS
Ni2P
Issue Date: Mar-2012
Publisher: International Union of Crystallography
Journal Title: Journal of Synchrotron Radiation
Volume: 19
Issue: 2
Start Page: 205
End Page: 209
Publisher DOI: 10.1107/S0909049512001197
PMID: 22338680
Abstract: Structural changes in Ni2P/MCM-41 were followed by quick extended X-ray absorption fine structure (QEXAFS) and were directly related to changes in X-ray absorption near-edge structure (XANES) which had been used earlier for the study of the active catalyst phase. An equation is proposed to correct the transient QEXAFS spectra up to second-order in time to remove spectral distortions induced by structural changes occurring during measurements. A good correlation between the corrected QEXAFS and the XANES spectral changes was found, giving support to the conclusions derived from the XANES in the previous work, namely that the formation of a Ni-S bond in a surface NiPS phase is involved in the active site for the hydrodesulfurization reaction.
Type: article
URI: http://hdl.handle.net/2115/48653
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 朝倉 清高

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