Activation of oxygen at metal surfaces

被引：30
作者：
Carley, AF [1 ]
Davies, PR [1 ]
Roberts, MW [1 ]
机构：
[1] Univ Cardiff Wales, Sch Chem, Cardiff CF10 3TB, Wales
来源：
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 2005年 / 363卷 / 1829期
关键词：
ammonia; catalysis; oxidation; carbon dioxide; copper; hydrocarbons;
D O I：
10.1098/rsta.2004.1544
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Oxygen chemisorption at metal surfaces has been shown through a combination of scanning tunnelling microscopy and photoeleetron spectroscopy to involve transient states that provide low energy pathways for a wide range of surface reactions including the catalytic oxidation of ammonia and hydrocarbons. The kinetically 'hot' transients are disordered and mobile, become unreactive when they form ordered structures, and are characterized by non-classical kinetic behaviour. The role of surface additives (caesium) in controlling oxygen structures and the implications of oxygen transients for theory and reaction mechanisms in applied catalysis are considered.
引用
收藏
页码：829 / 846
页数：18
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