Thermal decomposition of barium titanate precursor prepared by a wet chemical method

Katsuyasu Sugawara*, Hiromi Sakusabe, Tomomichi Nishino, Takuo Sugawara, Ko jiro Ogiwara, Joshua S. Dranoff

*Corresponding author for this work

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

As a part of fundamental study on the kinetics of electroceramics processing by wet chemical methods, barium titanate precursor gel was prepared using barium acetate and titanium tetra-isopropapoxide as starting materials. Experimental results indicated that barium acetate was distributed uniformly in the gel matrix formed by hydrolysis and polymerization of titanium tetra-isopropoxide. In the subsequent calcination of the gel, rapid formation of barium titanate was observed above 823 K which resulted from the reaction between titania and barium carbonate or barium oxide(s). The dynamics of barium titanate formation under different heat-up programs was successfully simulated based on a proposed reaction model that incorporates a specified reactive portion of barium acetate in the gel matrix.

Original languageEnglish (US)
Pages (from-to)2837-2843
Number of pages7
JournalAIChE Journal
Volume43
Issue number11 A
DOIs
StatePublished - 1997

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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    Sugawara, K., Sakusabe, H., Nishino, T., Sugawara, T., Ogiwara, K. J., & Dranoff, J. S. (1997). Thermal decomposition of barium titanate precursor prepared by a wet chemical method. AIChE Journal, 43(11 A), 2837-2843. https://doi.org/10.1002/aic.690431332