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Support Effect of Metal Oxide on Rh Catalysts in the CH4-CO2 Reforming Reaction

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Abstract

Rhodium supported on various metal oxides was studied in the dry reforming reaction using methane and carbon dioxide, in order to reveal the effect of support on the catalytic activity of Rh. The TOF (turnover frequency) based on exposed Rh decreased in the following sequence of support: TiO2 > La2O3 = CeO2 > ZrO2 = MgO = SiO2 = MCM-41 > γ-Al2O3. The different TOF could be correlated with the stabilized species of Rh atom. It was concluded that the supports influenced the electronic state of Rh atoms, and that Rh metal catalyzed this reaction as a prominent active species.

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Authors and Affiliations

  1. Department of Materials Science, Faculty of Engineering, Tottori University, Koyama-cho Minami, Tottori, 680-8552, Japan

    Shigeru Yokota, Kazu Okumura & Miki Niwa

  2. Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Mikazuki-cho, Sayo-gun, Hyogo, 679-5198, Japan

    Shigeru Yokota

Authors
  1. Shigeru Yokota
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  2. Kazu Okumura
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  3. Miki Niwa
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Yokota, S., Okumura, K. & Niwa, M. Support Effect of Metal Oxide on Rh Catalysts in the CH4-CO2 Reforming Reaction. Catalysis Letters 84, 131–134 (2002). https://doi.org/10.1023/A:1021097206196

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