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Surface phase transitions of Pt(110) studied by desorption dynamics of product CO2 in steady-state CO oxidation
| Title: | Surface phase transitions of Pt(110) studied by desorption dynamics of product CO2 in steady-state CO oxidation |
| Authors: | Rzeznicka, I. Browse this author | | Morales de la Garza, L. Browse this author | | Matsushima, T.3 Browse this author →KAKEN DB |
| Authors(alt): | 松島, 龍夫3 |
| Issue Date: | Jul-2002 |
| Publisher: | AVS Science & Technology of Materials, Interfaces, and Processing |
| Journal Title: | Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films |
| Volume: | 20 |
| Issue: | 4 |
| Start Page: | 1475 |
| End Page: | 1480 |
| Publisher DOI: | 10.1116/1.1488945 |
| Abstract: | The transformation of (1×2) into (1×1) on a Pt(110) surface in the course of CO oxidation was studied through the analysis of both angular and velocity distributions of desorbing product CO2 and low-energy electron diffraction (LEED) intensity. The intensity of half-order LEED spots decreased quickly, showing the beginning of the transformation of (1×2)→(1×1) just below the kinetic transition, where the rate-determining step switched from CO adsorption to O2 dissociation. On the other hand, the angular distribution of desorbing CO2 sharply changed at a CO pressure far above the kinetic transition, where (1×2) domains disappeared. Below this approximate CO pressure, CO2 was mostly formed on (1×2) domains regardless of its reduced area. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/5734 |
| Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 松島 龍夫
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