Synthesis of Protonated Derivatives of Layered Perovskite-Like Bismuth Titanates
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The possibility of synthesizing protonated derivatives of layered perovskite-like titanates Bi4Ti3O12, ABi4Ti4O15, (A = Ba, Sr, Ca) and K2.5Bi2.5Ti4O13 is experimentally investigated. It is established that in the case of Bi4Ti3O12 and ABi4Ti3O15, single-phased protonated derivatives cannot be obtained by treating the compounds with acid solutions, due to the partial dissolution of initial oxides, accompanied by the formation of titanium dioxide. In the case of K2.5Bi2.5Ti4O13 titanate, a number of new protonated and hydrated derivatives are obtained and described.
Keywordslayered oxide titanate hydration protonation acid leaching
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