Thermodynamics of the Hydrothermal Synthesis of Calcium Titanate with Reference to Other Alkaline-Earth Titanates

Malgorzata M. Lencka; Richard Riman

doi:10.1021/cm00049a006

Thermodynamics of the Hydrothermal Synthesis of Calcium Titanate with Reference to Other Alkaline-Earth Titanates

Malgorzata M. Lencka, Richard Riman

Inst Adv Material Dev&Nanotech

Research output: Contribution to journal › Article › peer-review

103 Scopus citations

Abstract

A thermodynamic model for hydrothermal synthesis of alkaline-earth titanates has been utilized to predict the optimum conditions for the synthesis of phase-pure CaTiO₃. The predictions have been experimentally validated using Ca(NO₃)₂ or Ca(OH)₂ as sources of calcium and crystalline or hydrous TiO₂ as a source of titanium at moderate temperatures (433-473 K). Practical experimental techniques have been developed to avoid the contamination of the calcium titanate with undesirable solid phases (e.g., calcium carbonate or hydroxide). These conditions were compared with those previously determined for the Ba-Ti and Sr-Ti hydrothermal systems.

Original language	English (US)
Pages (from-to)	18-25
Number of pages	8
Journal	Chemistry of Materials
Volume	7
Issue number	1
DOIs	https://doi.org/10.1021/cm00049a006
State	Published - Jan 1995

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

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abstract = "A thermodynamic model for hydrothermal synthesis of alkaline-earth titanates has been utilized to predict the optimum conditions for the synthesis of phase-pure CaTiO3. The predictions have been experimentally validated using Ca(NO3)2 or Ca(OH)2 as sources of calcium and crystalline or hydrous TiO2 as a source of titanium at moderate temperatures (433-473 K). Practical experimental techniques have been developed to avoid the contamination of the calcium titanate with undesirable solid phases (e.g., calcium carbonate or hydroxide). These conditions were compared with those previously determined for the Ba-Ti and Sr-Ti hydrothermal systems.",

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