New development of inorganic ion exchanger: Ion-Exchange of Na+ Ion in Na0.95Mo2O4
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概要
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Ion-exchange of Na<SUP>+</SUP> ion in Na<SUB>0.95</SUB>Mo<SUB>2</SUB>O<SUB>4</SUB> with a layered structure was attempted with proton, alkali and alkaline earth metal ions. The Na<SUP>+</SUP> ion was ion-exchanged with Li<SUP>+</SUP>, K<SUP>+</SUP>, Rb<SUP>+</SUP>, Cs<SUP>+</SUP> and Mg<SUP>2+</SUP> ions to yield (A, Na, H) <SUB>0.95</SUB>Mo<SUB>2</SUB>O<SUB>4</SUB> ⋅nH<SUB>2</SUB>O (A=Li, K, Rb, Cs, Mg) . No Na<SUP>+</SUP> ion was detected in the products ion-exchanged with Rb<SUP>+</SUP> and Cs<SUP>+</SUP> ions and Na<SUP>+</SUP> ion remained in the case of ion-exchange with Li<SUP>+</SUP>, K<SUP>+</SUP>, H<SUP>+</SUP> and Mg<SUP>2+</SUP> ions. Ion-exchange with H<SUP>+</SUP> yielded H<SUB>0.92</SUB>Na<SUB>0.03</SUB>Mo<SUB>2</SUB>O<SUB>4</SUB>⋅0.79H<SUB>2</SUB>O. In the case of Ca<SUP>2+</SUP>, Sr<SUP>2+</SUP> and Ba<SUP>2+</SUP> ions AMoO<SUB>4</SUB> (A=Ca, Sr, Ba) was yielded during ionexchange reaction. All the ion-exchanged compounds exhibit semiconductive temperature dependence and the electric resistivity for the dehydrated H, K, Rb and Cs derivatives is smaller than that for the hydrated ones.
- 日本イオン交換学会の論文
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