層状チタン酸塩Cs_xTi_<2-x/2>Mg_<x/2>O_4(x=0.70)の合成とイオン交換
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概要
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A layer structured titanate Cs_xTi_<2-x/2>Mg_<x/2>O_4(x=0.70) with the lepidocrocite structure has been prepared by a solid state reaction using Cs_2CO_3, anatase type TiO_2 and MgO at 800℃. Ion exchange reactions have been studied in aqueous solutions. The single phases of lithium, sodium and hydrogen ion exchange products were obtained from Cs_<0.70>Ti_<1.65>Mg_<0.35>O_4. They contained interlayer water and the host layer was retained on the reactions. Cs^+ in the interlayer space was ion exchanged up to 100 %. A part of Mg^<2+> in the intralayer was also ion exchanged in LiNO_3 and H_2SO_4 solutions. The products were characterized by chemical analysis, TG-DTA, XRD and UV-VIS-NIR.
- 2004-12-01