The Catalytic Activity of Hydrous Zirconium Oxide Calcined at Several Temperatures

Abstract
Hydrous zirconium oxide is an amorphous solid and has several catalytic activities. The oxide was changed to crystalline zirconia by calcination at a high temperature, and the catalytic activities were lowered. The correlation between the surface property and the catalytic activity was investigated on hydrous zirconium oxide calcined at several temperatures; the best activity was obtained in the oxide calcined at 300°C.

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