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

Wada, Takahiro; Bando, Kyoko K.; Miyamoto, Takeshi et al.

Journal of Synchrotron Radiation, 2012, 19(2), 205-209

Permalink : https://hdl.handle.net/2115/48653

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アクセス権
open access
URI
https://hdl.handle.net/2115/48653
タイトル
Operando QEXAFS studies of Ni2P during thiophene hydrodesulfurization: direct observation of Ni-S bond formation under reaction conditions
著者
Wada, Takahiro ; Bando, Kyoko K. ; Miyamoto, Takeshi ; Takakusagi, Satoru ; Oyama, S. Ted ; Asakura, Kiyotaka
著者名
Wada, Takahiro
著者名
Bando, Kyoko K.
著者名
Miyamoto, Takeshi
著者名
Takakusagi, Satoru
著者名
Oyama, S. Ted
e-Rad_Researcher
60175164
著者名
Asakura, Kiyotaka
言語
英語
キーワード
EXAFS
quick-EXAFS
hydrodesulfurization
operando XAFS
Ni2P
発行日
2012-03
出版者
International Union of Crystallography
収録物名
Journal of Synchrotron Radiation
巻(号)
19(2)
ページ
205-209
抄録
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.
資源タイプ
学術雑誌論文
出版タイプ
Version of Record
PISSN
0909-0495
関連情報
PMID
22338680
関連情報 (isIdenticalTo)
出版社版DOI
https://doi.org/10.1107/S0909049512001197