Evaluation of Active Sites over the UHV Treated Pd Foil Surface

DOI Web Site 5 References
  • ITOH Tatsuhiko
    Department of Chemical Science and Engineering Graduate School of Engineering, Kobe University
  • TANIYA Keita
    Department of Chemical Science and Engineering Graduate School of Engineering, Kobe University
  • ICHIHASHI Yuichi
    Department of Chemical Science and Engineering Graduate School of Engineering, Kobe University
  • NISHIYAMA Satoru
    Department of Chemical Science and Engineering Graduate School of Engineering, Kobe University

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Other Title
  • 超高真空処理したPd 箔表面の活性点評価
  • チョウコウシンクウ ショリ シタ Pd ハク ヒョウメン ノ カッセイテン ヒョウカ

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Description

We propose H2-D2 titration method for evaluation surfaces of metallic catalysts, and have been applied to a study on the surface reconstruction of Pd foil model catalysts modified by the UHV treatment for H2-D2 exchange reaction. The UHV treatment brought about the reconstructed surfaces of Pd foil catalysts, and the improvement of H2-D2 exchangeactivity and the decrease of activation energy. The H2-D2 titration over the UHV-treated Pd foil catalysts indicated that the number of strongly adsorbed hydrogen atom species was increased by the UHV treatment. These results strongly suggest that the UHV treatment generates the newly active sites on Pd foil catalysts. The SEM study also supported the surface reconstruction of the Pd foil catalysts by the UHV treatment. In this report, we introduce the high sensitivity of the H2-D2 titration for hydrogen activation sites over a low surface area metallic catalyst.

Journal

  • Hyomen Kagaku

    Hyomen Kagaku 33 (7), 394-398, 2012

    The Surface Science Society of Japan

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