ROOM-TEMPERATURE PEROVSKITE PRODUCTION FROM BIMETALLIC ALKOXIDES BY KETONE ASSISTED OXO SUPPLEMENTATION (KAOS)

Barium titanate has been prepared at room temperature from a well-char acterized crystalline barium titanium oxo alkoxide by reaction with ac etone. An aldol condensation apparently supplies oxygen to condensing oxo alkoxide clusters. Transmission electron microscopy confirms that the crystallites so formed are dense and perfect with an average size of approximately 85 Angstrom. Characterization of reactants and produc ts provides a tentative understanding of structural evolution and the intermediates of the transformation. Crystalline SrTiO3 and BaZrO3 wer e also formed at room temperature by this same method.