Abstract
The mechanism of CO oxidation reaction on oxygen-precovered Pt(111) surfaces has been studied by using time-resolved near-edge x-ray absorption fine structure spectroscopy. The whole reaction process is composed of two distinct paths: (1) a reaction of isolated oxygen atoms with adsorbed CO, and (2) a reaction of island-periphery oxygen atoms after the CO saturation. CO coadsorption plays a role to induce the dynamic change in spatial distribution of O atoms, which switches over the two reaction paths. These mechanisms were confirmed by kinetic Monte Carlo simulations. The effect of coadsorbed water in the reaction mechanism was also examined.
| Original language | English |
|---|---|
| Article number | 134709 |
| Journal | Journal of Chemical Physics |
| Volume | 122 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - 2005 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Mechanism of the CO oxidation reaction on O-precovered Pt(111) surfaces studied with near-edge x-ray absorption fine structure spectroscopy. / Nakai, I.; Kondoh, Hiroshi; Amemiya, K.; Nagasaka, M.; Shimada, T.; Yokota, R.; Nambu, A.; Ohta, T.
In: Journal of Chemical Physics, Vol. 122, No. 13, 134709, 2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Mechanism of the CO oxidation reaction on O-precovered Pt(111) surfaces studied with near-edge x-ray absorption fine structure spectroscopy
AU - Nakai, I.
AU - Kondoh, Hiroshi
AU - Amemiya, K.
AU - Nagasaka, M.
AU - Shimada, T.
AU - Yokota, R.
AU - Nambu, A.
AU - Ohta, T.
PY - 2005
Y1 - 2005
N2 - The mechanism of CO oxidation reaction on oxygen-precovered Pt(111) surfaces has been studied by using time-resolved near-edge x-ray absorption fine structure spectroscopy. The whole reaction process is composed of two distinct paths: (1) a reaction of isolated oxygen atoms with adsorbed CO, and (2) a reaction of island-periphery oxygen atoms after the CO saturation. CO coadsorption plays a role to induce the dynamic change in spatial distribution of O atoms, which switches over the two reaction paths. These mechanisms were confirmed by kinetic Monte Carlo simulations. The effect of coadsorbed water in the reaction mechanism was also examined.
AB - The mechanism of CO oxidation reaction on oxygen-precovered Pt(111) surfaces has been studied by using time-resolved near-edge x-ray absorption fine structure spectroscopy. The whole reaction process is composed of two distinct paths: (1) a reaction of isolated oxygen atoms with adsorbed CO, and (2) a reaction of island-periphery oxygen atoms after the CO saturation. CO coadsorption plays a role to induce the dynamic change in spatial distribution of O atoms, which switches over the two reaction paths. These mechanisms were confirmed by kinetic Monte Carlo simulations. The effect of coadsorbed water in the reaction mechanism was also examined.
UR - http://www.scopus.com/inward/record.url?scp=24344478611&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=24344478611&partnerID=8YFLogxK
U2 - 10.1063/1.1869415
DO - 10.1063/1.1869415
M3 - Article
AN - SCOPUS:24344478611
VL - 122
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 13
M1 - 134709
ER -