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Energy-dispersive XAFS study on the decarbonylation process of Mo(CO)6 in NaY zeolite

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Abstract

The temperature-programmed decarbonylation process of Mo(CO)6 in NaY zeolite was studied by means of a time-resolved energy-dispersive XAFS method. The XANES analysis demonstrated that the decarbonylation proceeded by two successive steps via a stable intermediate which existed between 440 and 490 K. The curve fitting analysis of the EXAFS data revealed that the intermediate was a molybdenum monomer subcarbonyl species Mo(CO)3(OL)3 coordinated by three CO ligands and three oxygen atoms of zeolite framework (OL). Molybdenum dimer subcarbonyl species were not observed. This study demonstrated that the DXAFS technique is a powerful method to study the dynamic behavior of the Mo carbonyl species during decarbonylation process.

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Authors and Affiliations

  1. Department of Chemistry, Graduate School of Science, the University of Tokyo, Hongo, Bunnkyo-ku, Tokyo, 113-0033, Japan

    Aritomo Yamaguchi, Akane Suzuki, Takafumi Shido & Yasuhiro Iwasawa

  2. Research Center for Materials Science, Nagoya University, Nagoya, 464-8602, Japan

    Yasuhiro Inada

  3. Catalysis Research Center, Hokkaido University, Kita-ku, Sapporo, 060-0811, Japan

    Kiyotaka Asakura

  4. Photon Factory, Institute of Materials Structure Science, KEK, Ibaraki, 305-0801, Japan

    Masaharu Nomura

Authors
  1. Aritomo Yamaguchi
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  2. Akane Suzuki
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  3. Takafumi Shido
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  4. Yasuhiro Inada
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  5. Kiyotaka Asakura
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  6. Masaharu Nomura
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  7. Yasuhiro Iwasawa
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Yamaguchi, A., Suzuki, A., Shido, T. et al. Energy-dispersive XAFS study on the decarbonylation process of Mo(CO)6 in NaY zeolite. Catalysis Letters 71, 203–208 (2001). https://doi.org/10.1023/A:1009015523732

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