Abstract
ABSTRACT A lepidocrocite-like potassium titanate, (Kx(LixTi1-x)O2; Lss) with a layered structure can provide a reactive interlayer space for soft-chemical reaction such as ion-exchange or intercalation and the hydrated sodium derivative (Lss-Na) was obtained by an ion-exchange reaction. The crystal structures of the hydrated and dehydrated Lss-Na were refined by using synchrotron powder X-ray diffraction data. Two steps of dehydrated processes for the Lss-Na were observed by in-situ synchrotron powder X-ray diffraction. The ion-exchange property for Lss-Na was superior to those for Lss and Lss-H and was corelated with the effective basal space which was expanded by formation of two layers of water molecules.
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