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Angular distributions of desorbing N2 in thermal N2O decomposition on Rh(100)

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Title: Angular distributions of desorbing N2 in thermal N2O decomposition on Rh(100)
Authors: Matsushima, Tatsuo Browse this author →KAKEN DB
Kokalj, Anton Browse this author
Keywords: Thermal desorption
Nitrous oxide
Surface chemical reaction
Angle-resolved DIET
Density-functional theory calculations
Issue Date: 15-Sep-2007
Publisher: Elsevier B.V.
Journal Title: Surface Science
Volume: 601
Issue: 18
Start Page: 3996
End Page: 4000
Publisher DOI: 10.1016/j.susc.2007.04.037
Abstract: The angular distribution of desorbing N2 was studied in the decomposition of N2O(a) on Rh(1 0 0) at 60–140 K by means of angle-resolved temperature-programmed desorption. N2 desorption shows two peaks at around 80 K and 110 K. At low N2O coverage, the former collimates far from the surface normal toward the [0 0 1] direction, whereas at high coverage, the desorption sharply collimates along the surface normal. The adsorption form of N2O and its dissociation were also examined by DFT-GGA calculations. Dissociating N2O is proposed to be lying along the [0 0 1] direction at low coverage and to change to an upright form bonding through the terminal oxygen at high coverage.
Type: article (author version)
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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