CO Oxidation and NO Reduction on Perovskite Oxides
CO Oxidation and NO Reduction on Perovskite Oxides
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DOI：
10.1080/01614949208016316
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发表时间：
1992-12
影响因子：
10.9
通讯作者：
B. Viswanathan
中科院分区：
文献类型：
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作者：
B. Viswanathan
摘要：对贵金属负载型尾气控制催化剂替代品的研究促使人们对多种钙钛矿氧化物进行了研究（1）。这些表面上的氧化还原过程的机理本质上是拓扑化学的，因此解释了体相氧的可逆损失和吸收，或者空位的同时产生和湮灭，这使得这些体系成为有吸引力的氧化催化剂。钙钛矿结构中可变的氧化学计量比是这些材料作为一类新型高温超导氧化物的特殊行为的原因（2）。从骨架中去除氧极其容易，但仍保留钙钛矿结构的基本成分，以及从理想钙钛矿结构衍生出不同结构骨架的可能性（例如，在钙钛矿层之间插入岩盐层会形成K₂NiF₄结构，而在钙钛矿层之间插入双层[Bi₂O₂]会形成奥里维里斯相）以及……的可能性。
Abstract The search for substitutes of noble metal supported exhaust control catalysts has led to the study of a number of perovskite oxides (1). The mechanisms of redox processes on these surfaces are topotactic in nature, thus accounting forthe reversible loss and uptake of bulk oxygen or for the concomitant creation and annihilation of vacancies rendering these systems as attractive oxidation catalysts. The variable oxygen stoichiometry of perovskite structure is responsible for the exotic behavior of these materials as a new class of high Tc superconducting oxides (2). The extreme ease of removing oxygen from the framework but still retaining the basic ingredients of the perovskite structure and the possibility of deriving different structural frameworks from ideal perovskite structure (e.g. insertion of rock salt layer between perovskite layers results in a K2NiF4 structure, while insertion of double [Bi2O2] layers between perovskite layers results in an Aurivillius phase) and the possibility of subs...