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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 4    No. 2    June 1994

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PREPARATION OF ULTRAFINE ALUMINA POWDERS BY ALUMINUM ISOPROPOXIDE
Yu Zhongqing; Zhao Qinsheng; Zhang Qixiu

Department of Nonferrous Metallurgy; Central South University of Techonology; Changsha 410083

Abstract:The porous γ-AlOOH powders were obtained by the hydrolysis of aluminum isopropoxide in the alkaline (C69)solutions. The disperse α-Al2O3 powders, with the mean diameter of 70 nmand apparent density of 0.14 g/cm3,were obtained by the calcination of said γ-AlOOH powdersat suitable temperature.The thermal behavior and changes in powder morphology of AlOOH dur-ing the calcination process were also discussed.

 

Key words: aluminum Isopropoxide alumina ultrafine powders hydrolysis calcination

ISSN 1672-7029
CN 43-1423/U

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