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

We studied the mechanism of CO oxidation on O-covered Pt(111) surfaces during CO exposure by means of time-resolved near edge x-ray absorption fine structure spectroscopy. Two distinct reaction processes were found to occur sequentially; isolated O atoms and island-periphery O atoms contribute to ea...

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Published inThe Journal of chemical physics Vol. 121; no. 11; p. 5035
Main Authors Nakai, I, Kondoh, H, Amemiya, K, Nagasaka, M, Nambu, A, Shimada, T, Ohta, T
Format Journal Article
LanguageEnglish
Published United States 15.09.2004
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Abstract We studied the mechanism of CO oxidation on O-covered Pt(111) surfaces during CO exposure by means of time-resolved near edge x-ray absorption fine structure spectroscopy. Two distinct reaction processes were found to occur sequentially; isolated O atoms and island-periphery O atoms contribute to each process. Combination of in situ monitoring of the reaction kinetics and Monte Carlo simulations revealed that CO coadsorption plays a role of inducing the dynamic change in spatial distribution of O atoms, which switches over the two reaction paths.
AbstractList We studied the mechanism of CO oxidation on O-covered Pt(111) surfaces during CO exposure by means of time-resolved near edge x-ray absorption fine structure spectroscopy. Two distinct reaction processes were found to occur sequentially; isolated O atoms and island-periphery O atoms contribute to each process. Combination of in situ monitoring of the reaction kinetics and Monte Carlo simulations revealed that CO coadsorption plays a role of inducing the dynamic change in spatial distribution of O atoms, which switches over the two reaction paths.
Author Nakai, I
Amemiya, K
Nambu, A
Nagasaka, M
Shimada, T
Ohta, T
Kondoh, H
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  surname: Ohta
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BackLink https://www.ncbi.nlm.nih.gov/pubmed/15352792$$D View this record in MEDLINE/PubMed
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Snippet We studied the mechanism of CO oxidation on O-covered Pt(111) surfaces during CO exposure by means of time-resolved near edge x-ray absorption fine structure...
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Title Reaction-path switching induced by spatial-distribution change of reactants: CO oxidation on Pt(111)
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