| ID | 111231 |
| タイトル別表記 | Analysis of d-Electron State of Platinum Salts on Silica During Thermal Decomposition by a Laboratory-type X-ray Absorption Spectrometer : Choice of Parameters for in situ Experiments
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| 著者 |
宮本, 一範
徳島大学
近藤, 正哉
徳島大学
行本, 晃
徳島大学
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| キーワード | silica-supported platinum catalyst
in situ XANES
laboratory-type XAFS spectrometer
d-electron occupancy
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| 資料タイプ |
学術雑誌論文
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| 抄録 | The decomposition behavior of H2PtCl6 or Pt(NH3)4Cl2 supported on amorphous silica was investigated by X-ray absorption near edge spectroscopy using a laboratory-type spectrometer. The choice of a monochromator crystal, the slit width and the acquisition time for in situ measurements of catalyst samples is discussed. The whiteline intensities at the Pt L3 edge XANES did not always reflect on the oxidation state of the platinum species, but on the d-orbital occupancy, as pointed out previously. The changing behavior of the Pt d-orbital occupancy of platinum species on silica upon a thermal treatment in air was evaluated by Pt L2,3 edge XANES with Mansour’s method. Metallic platinum formed on silica after calcination at 773 K under air, but cationic platinum species were suggested to have remained.
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| 掲載誌名 |
分析化学
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| ISSN | 05251931
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| cat書誌ID | AN00222633
AA11681958
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| 出版者 | 日本分析化学会
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| 巻 | 64
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| 号 | 12
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| 開始ページ | 889
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| 終了ページ | 894
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| 発行日 | 2016-01-06
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| 権利情報 | © The Japan Society for Analytical Chemistry 2015
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| EDB ID | |
| 出版社版DOI | |
| 出版社版URL | |
| フルテキストファイル | |
| 言語 |
jpn
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| 著者版フラグ |
出版社版
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| 部局 |
理工学系
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