钙钛矿氧化物的CO氧化和NO还原

IF 9.3 2区 化学 Q1 CHEMISTRY, PHYSICAL Catalysis Reviews-Science and Engineering Pub Date : 1992-12-01 DOI:10.1080/01614949208016316
B. Viswanathan
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引用次数: 86

摘要

寻找贵金属支撑的废气控制催化剂的替代品已经导致了许多钙钛矿氧化物的研究(1)。这些表面上的氧化还原过程的机制本质上是拓扑性的,因此可以解释大量氧气的可逆损失和吸收,或者伴随的空位的产生和湮灭,使这些系统成为有吸引力的氧化催化剂。钙钛矿结构的可变氧化学测量是这些材料作为一类新的高Tc超导氧化物的奇特行为的原因(2)。从框架中极容易除去氧,但仍然保留了钙钛矿结构的基本成分,以及从理想的钙钛矿结构中衍生出不同结构框架的可能性(例如,在钙钛矿层之间插入岩盐层导致K2NiF4结构。而双[Bi2O2]层在钙钛矿层之间的插入会导致Aurivillius相)和subsubs的可能性。
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CO Oxidation and NO Reduction on Perovskite Oxides
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...
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来源期刊
CiteScore
22.30
自引率
2.80%
发文量
29
期刊介绍: Catalysis Reviews is dedicated to fostering interdisciplinary perspectives in catalytic science and engineering, catering to a global audience of industrial and academic researchers. This journal serves as a bridge between the realms of heterogeneous, homogeneous, and bio-catalysis, providing a crucial and critical evaluation of the current state of catalytic science and engineering. Published topics encompass advances in technology and theory, engineering and chemical aspects of catalytic reactions, reactor design, computer models, analytical tools, and statistical evaluations.
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