Operando Observation of Ni2P Structural Changes during Catalytic Reaction: Effect of H2S Pretreatment
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概要
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In situ X-ray absorption spectroscopy was used to study the effect of H2S pretreatment on the activation of Ni2P catalysts for the thiophene hydrodesulfurization (HDS) reaction. It was found that H2S treatment produced Ni-S bonds that were slightly longer and that had higher coordination numbers than those formed during reaction. The longer Ni-S bonds formed by H2S treatment were changed to the shorter Ni-S bonds by the catalytic reaction, and these shorter bonds were associated with high activity. The work provides evidence that a NiPS phase is active in the HDS reaction.
著者
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Asakura K
Center Of Spectrochemistry Graduate School Of Science The University Of Tokyo
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Asakura Kiyotaka
Catalysis Res. Center Hokkaido Univ. Kita 21-10 Kita-ku Sapporo 001-0021 Jpn
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高草木 達
東京大学大学院理学系化学専攻
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Takakusagi Satoru
Physical Chemistry Laboratory Division Of Chemistry Graduate School Of Science Hokkaido University
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Asakura K
Hokkaido Univ. Sapporo Jpn
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Asakura Kiyotaka
Center Of Spectrochemistry Graduate School Of Science The University Of Tokyo
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