Reaction-path switching induced by spatial-distribution change of reactants: CO oxidation on Pt(111)

I. Nakai, H. Kondoh, K. Amemiya, M. Nagasaka, A. Nambu, T. Shimada, T. Ohta

研究成果: Article査読

33 被引用数 (Scopus)

抄録

The mechanism of carbon monoxide oxidation on oxygen covered Pt(111) surfaces during CO exposure was studied using time-resolved near edge x-ray absorption fine structure spectroscopy. A switching of reaction path in CO oxidation reaction was caused by the CO adsorption induced two dimensional condensation of O atoms. Monte Carlo simulations and in situ monitoring of reaction kinetics revealed that CO coadsorption played a role of inducing change in spatial distribution of O atoms. The results demonstrate that effects of long-range interactions and consequent dynamic spatial-distribution changes of the reactants are of importance for understanding the kinetics in the reaction systems deviated from the conventional Langmuir-Hinshelwood kinetics.

本文言語English
ページ(範囲)5035-5038
ページ数4
ジャーナルJournal of Chemical Physics
121
11
DOI
出版ステータスPublished - 2004 9 15
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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