Composition-Dependent Ion-Exchange Reactivity of Potassium Lithium Titanates

Abstract The ion exchange of dodecylammonium ion was examined for two potassium lithium titanates; the titanates were K0.80Ti1.71Li0.29O3.97 prepared by a solid-state reaction at 800 °C and K0.66Ti1.73Li0.27O3.93 prepared by a solid-state reaction at 1020 °C followed by reaction with aqueous H2SO4 and subsequent annealing. A single phase intercalation compound formed successfully for K0.66Ti1.73Li0.27O3.93 (the amount of the adsorbed dodecylammonium was 2.1 mmol g−1) by reaction with an aqueous solution of dodecylammonium chloride. On the other hand, the parent titanate remained for K0.80Ti1.71Li0.29O3.97 (1.4 mmol g−1).