Catalytic activity of electron donation owing to strong interaction between of Pt clusters and Si substrate and its size dependence: analysis on basis of bistability in chemical reaction kinetics

DOI

Bibliographic Information

Other Title
  • シリコン担体と強い相互作用を持つ白金クラスターの電子供与性触媒活性とクラスターサイズ依存性：化学反応速度の双安定性に基づく解析

Abstract

<p>Monatomic-layered Pt clusters strongly interacting with a Si substrate have different turnover rates of CO oxidation in heating and cooling processes even at the same temperature and partial pressures of CO and O2; bistability. Temperature-programed desorption measurements show the adsorption energy of CO of this system is lower than that of bulk Pt surfaces. On the basis of these experimental results, it is evidenced that (1) this system possesses higher activity of dissociative adsorption of O2 owing to electron-donating catalysis and (2) Pt30 maintains the dissociative-adsorption activity at lower temperature than Pt20.</p>

Journal

Details 詳細情報について

  • CRID
    1390282752353670656
  • NII Article ID
    130007737796
  • DOI
    10.14886/jvss.2019.0_3cp06
  • ISSN
    24348589
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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