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Surface-nitrogen Removal Studied from Desorption Dynamics

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Title: Surface-nitrogen Removal Studied from Desorption Dynamics
Authors: Kobal, Ivan Browse this author
Kokalj, Anton Browse this author
Horino, Hideyuki Browse this author
Ohno, Yuichi Browse this author →KAKEN DB
Matsushima, Tatsuo Browse this author →KAKEN DB
Issue Date: 2002
Publisher: Research Trends
Journal Title: Trends in Chemical Physics
Volume: 10
Start Page: 139
End Page: 178
Abstract: The removal of adsorbed nitrogen from catalyst surfaces is one of the key processes in proceeding efficient catalytic treatments of nitrogen oxides in exhaust gases from automotive and stationary sources. This review summarizes the typical characteristics of three removal processes of surface-nitrogen on metal surfaces, i.e., (i) 2N(a) → Nz(g), (ii) N(a) + NO(a) → N2O(a) → N2(g) + O(a) and (iii) NO(a) + O(a) → NO2(a) → NO3-(a) → N2(g). In the first process desorbing N2 is collimating along the surface normal direction and is vibrationally excited because a large amount of the binding energy is released in the associative process. N2 in the second process collimates into a highly inclined direction on flat surfaces because N2O lies on the surface immediately before dissociation. These characteristics are exemplified to be useful to examine the reaction pathway of NOx decomposition on catalysts.
Rights: Copyright (c) 2002 Research Trends
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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