Investigation on the Mechanism of the Preparation of Lead Titanate Fine Powders by Hydrolysis of Alkoxide

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (12): 1834.

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Investigation on the Mechanism of the Preparation of Lead Titanate Fine Powders by Hydrolysis of Alkoxide

QI Li-Min, MA Ji-Ming, CHENG Hu-Min, ZHAO Zhen-Guo

Department of Chemistry, Peking University, Beijing, 100871

Received:1994-03-10 Revised:1994-06-21 Online:1994-12-24 Published:1994-12-24

Abstract

Abstract: The TG-DTA, XRDand IRtechniques have been used to study the crystallization behavior of lead titanate(PT) fine powders prepared by hydrolysis of alkoxide, and the content of soluble lead in the fine PTpowders has been examined by chemical analysis. The results suggest that the Pb in the PTpowders which has not been crystallized completely exists in two states, i. e. amorphous PbTiO₃ and amorphous PbO. When the temperature reaches the crystallization temperature region(430-470℃), the conversion from amorphous PbTiO₃ to perovskite phase of PbTiO₃ and the reaction between PbOand TiO₂ take place simutaneously.

Key words: Hydrolysis of alkoxide, Lead titanate, Fine powders, Crystallization

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QI Li-Min, MA Ji-Ming, CHENG Hu-Min, ZHAO Zhen-Guo. Investigation on the Mechanism of the Preparation of Lead Titanate Fine Powders by Hydrolysis of Alkoxide[J]. Chem. J. Chinese Universities, 1994, 15(12): 1834.

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Investigation on the Mechanism of the Preparation of Lead Titanate Fine Powders by Hydrolysis of Alkoxide

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