Abstract
AbstractCrystalline metal oxide catalysts are classified into single atomic type, molecular discrete oxide cluster type, supported oxide cluster type, non-porous type crystalline metal oxide, and porous type crystalline metal oxide, based on the oxide catalyst development history starting from simple metal oxides to crystalline complex metal oxides and on their various crystal structures. Catalytic properties of simple metal oxides and complex metal oxides are also classified according to oxygen-metal ratio and crystal structure, revealing that structures constructed with more discrete metal oxide units and in the lesser condensed state tend to show higher oxygenation ability and stronger acid properties, while structures formed in more condensed state result in high dehydrogenation activity and stronger solid base property. The material synthetic method is also dependent on these structural features.KeywordsClassificationSimple metal oxideCrystalline complex metal oxideCatalytic propertyCrystal structureSynthetic method
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