Site-switching for CO2 formation and structural transformation of (1×2)⇄(1×1) in steady-state CO oxidation on Pt (1 1 0)

Md Golam Moula, Asht B P Mishra, Izabela Irena Rzeznicka, Mikhail U. Kislyuk, Suwen Liu, Yuichi Ohno, Tatsuo Matsushima

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The angular and velocity distributions of desorbing product CO2 were studied in steady-state CO oxidation on Pt(110) by means of cross-correlation time-of-flight techniques. In the active region where the reaction was first order in CO, the angular distribution in the (001) plane was split into two-directional lobes collimated at ±25° from the surface-normal direction, indicating the CO2 formation on inclined (111) terraces. The translational temperature was maximized at these collimation angles, reaching about 1820 K. On the other hand, in a limited range of the inhibited region, where CO retarded the reaction, CO2 desorption sharply collimated along the surface-normal direction, suggesting CO2 formation on flat (1×1) domains.

Original languageEnglish
Pages (from-to)225-231
Number of pages7
JournalChemical Physics Letters
Volume341
Issue number3-4
DOIs
Publication statusPublished - 2001 Jun 22
Externally publishedYes

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Carbon Monoxide
angular distribution
Angular distribution
Oxidation
oxidation
collimation
lobes
cross correlation
velocity distribution
desorption
Velocity distribution
Desorption
products
temperature
Temperature
Direction compound

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Site-switching for CO2 formation and structural transformation of (1×2)⇄(1×1) in steady-state CO oxidation on Pt (1 1 0). / Golam Moula, Md; Mishra, Asht B P; Rzeznicka, Izabela Irena; Kislyuk, Mikhail U.; Liu, Suwen; Ohno, Yuichi; Matsushima, Tatsuo.

In: Chemical Physics Letters, Vol. 341, No. 3-4, 22.06.2001, p. 225-231.

Research output: Contribution to journalArticle

Golam Moula, Md ; Mishra, Asht B P ; Rzeznicka, Izabela Irena ; Kislyuk, Mikhail U. ; Liu, Suwen ; Ohno, Yuichi ; Matsushima, Tatsuo. / Site-switching for CO2 formation and structural transformation of (1×2)⇄(1×1) in steady-state CO oxidation on Pt (1 1 0). In: Chemical Physics Letters. 2001 ; Vol. 341, No. 3-4. pp. 225-231.
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abstract = "The angular and velocity distributions of desorbing product CO2 were studied in steady-state CO oxidation on Pt(110) by means of cross-correlation time-of-flight techniques. In the active region where the reaction was first order in CO, the angular distribution in the (001) plane was split into two-directional lobes collimated at ±25° from the surface-normal direction, indicating the CO2 formation on inclined (111) terraces. The translational temperature was maximized at these collimation angles, reaching about 1820 K. On the other hand, in a limited range of the inhibited region, where CO retarded the reaction, CO2 desorption sharply collimated along the surface-normal direction, suggesting CO2 formation on flat (1×1) domains.",
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AU - Golam Moula, Md

AU - Mishra, Asht B P

AU - Rzeznicka, Izabela Irena

AU - Kislyuk, Mikhail U.

AU - Liu, Suwen

AU - Ohno, Yuichi

AU - Matsushima, Tatsuo

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AB - The angular and velocity distributions of desorbing product CO2 were studied in steady-state CO oxidation on Pt(110) by means of cross-correlation time-of-flight techniques. In the active region where the reaction was first order in CO, the angular distribution in the (001) plane was split into two-directional lobes collimated at ±25° from the surface-normal direction, indicating the CO2 formation on inclined (111) terraces. The translational temperature was maximized at these collimation angles, reaching about 1820 K. On the other hand, in a limited range of the inhibited region, where CO retarded the reaction, CO2 desorption sharply collimated along the surface-normal direction, suggesting CO2 formation on flat (1×1) domains.

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