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

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)5035-5038
Number of pages4
JournalJournal of Chemical Physics
Volume121
Issue number11
DOIs
Publication statusPublished - 2004 Sep 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Fingerprint Dive into the research topics of 'Reaction-path switching induced by spatial-distribution change of reactants: CO oxidation on Pt(111)'. Together they form a unique fingerprint.

  • Cite this