Ammonia selective oxidation on Pt(100) sites in an alkaline medium

被引：129

作者：

Vidal-Iglesias, FJ ^{[1
]}

Solla-Gullón, J ^{[1
]}

Montiel, V ^{[1
]}

Feliu, JM ^{[1
]}

Aldaz, A ^{[1
]}

机构：

[1] Univ Alicante, Inst Electroquim, Dept Quim Fis, E-03080 Alicante, Spain

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 26期

关键词：

D O I：

10.1021/jp051269d

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 oxidation of ammonia on platinum surfaces is a structure sensitive reaction that takes place almost exclusively on Pt(100) sites. This report shows how dependent the activity is on different arrangements of (100) sites of platinum. The effect of two-dimensional domains has been addressed by using stepped surfaces having terraces with (100) geometry, either with (111) and (110) steps. The results were compared with those obtained from stepped surfaces having terraces with (111) or (110) symmetry and monatomic (100) steps, thus representing monodimensional (100) domains. The observed behavior confirms the extreme sensitivity of the reaction to the different arrangement of this type of square sites.

引用

页码：12914 / 12919

页数：6

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