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Anisotropic velocity distribution of desorbing product in carbon monoxide oxidation on palladium (110)

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Title: Anisotropic velocity distribution of desorbing product in carbon monoxide oxidation on palladium (110)
Authors: Matsushima, Tatsuo1 Browse this author →KAKEN DB
Shobatake, Kosuke Browse this author
Ohno, Yuichi Browse this author
Tabayashi, Kiyohiko Browse this author
Authors(alt): 松島, 龍夫1
Issue Date: Aug-1992
Publisher: American Institute of Physics
Journal Title: The Journal of Chemical Physics --
Volume: 97
Issue: 4
Start Page: 2783
End Page: 2789
Publisher DOI: 10.1063/1.463070
Abstract: Significant anisotropy was found in the velocity distributions of desorbing product CO2 from a Pd(110) surface. The velocity distributions were determined by a cross-correlation time-of-flight technique combined with angle-resolved thermal desorption. Heating the coadlayer of CO and oxygen produces five peaks in the CO2 formation spectrum; P1– (around 420 K), P2– (~370 K), P3– (~300 K), P4– (~230 K), and P5–CO2 (~170 K). The translational temperature of each CO2 is much higher than the corresponding surface temperature, and increases in the sequence of P1– <P2– <P3– <P4– <P5–CO2. It decreases rapidly with an increase in the desorption angle perpendicular to the surface trough and more slowly parallel to it. This anisotropy is correlated to the reaction site symmetry.
Rights: Copyright © 1992 American Institute of Physics
Type: article
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)

Submitter: 松島 龍夫

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