Surface-nitrogen removal in NO reduction on Pd(1 1 0) and its retardation by oxygen: Angle-resolved desorption studies

Ma, Yunsheng; Matsushima, Tatsuo

Catalysis Today, 2006, 117(1-3), 90-97

Permalink : https://hdl.handle.net/2115/14629

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アクセス権	open access
URI	https://hdl.handle.net/2115/14629
タイトル	Surface-nitrogen removal in NO reduction on Pd(1 1 0) and its retardation by oxygen: Angle-resolved desorption studies
著者	著者名 Ma, Yunsheng
著者	e-Rad_Researcher 30002116 著者名 Matsushima, Tatsuo
言語	英語
キーワード	Nitrogen oxide
	Nitrous oxide
	Palladium
	Single crystal surfaces
	Reduction
	Desorption
発行日	2006-09-30
出版者	Elsevier B.V.
収録物名	Catalysis Today
巻(号)	117(1-3)
ページ	90-97
抄録	An oxygen retarding effect toward surface-nitrogen removal processes was studied in the course of the catalyzed NO reduction on Pd(1 1 0) by angle-resolved product desorption analysis combined with cross-correlation time-of-flight techniques. Three surface-nitrogen removal processes, i.e., (i) 2N(a) → N2(g), (ii) N(a) + NO(a) → N2O(a) → N2(g) + O(a) and (iii) N2O(a) → N2O(g) are operative when CO is a counter-reducing reagent. Process (i) becomes predominant above ca. 600 K and is most sensitively retarded by O(a). Below ca. 550 K, processes (ii) and (iii) remove most of the surface nitrogen. By addition of O(a), process (iii) is enhanced once, suggesting an increase in the amount of the intermediate N2O(a), whereas its decomposition in process (ii) is more quickly retarded.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
PISSN	0920-5861
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.cattod.2006.05.004