Formation of N2O and (NO)2 during NO adsorption on Au 3D crystals

被引：47
|
作者：
Chau, TD [1 ]
de Bocarmé, TV [1 ]
Kruse, N [1 ]
机构：
[1] Free Univ Brussels, B-1050 Brussels, Belgium
来源：
CATALYSIS LETTERS | 2004年 / 98卷 / 2-3期
关键词：
chemical probing; gold nano-crystals; nitric oxide; nitrous oxide;
D O I：
10.1007/s10562-004-7918-4
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The adsorption of NO on Au 3D hemispherical crystals ("field emitter tips'') has been studied by means of pulsed field desorption mass spectrometry (PFDMS) under dynamic gas flow conditions and at 300 K. Local chemical probing of similar to200 Au sites in the stepped surface region between the central (111) pole and the peripheral ( 001) plane leads to the detection of NO+, N2O+ and (NO)(2)(+) species. Obviously, molecular NO adsorption on stepped Au surfaces can lead to dimerization. Nitrous oxide formation probably occurs via the dimer, (NO)(2).
引用
收藏
页码：85 / 87
页数：3
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