1996 Volume 25 Issue 11 Pages 989-990
Rubidium ion in Rb8Nb22O59 with a tunnel structure was ion-exchanged with alkaline ions and proton. The ion-exchange with proton was almost complete to yield H7.71Rb0.29Nb22O59·8.9H2O. The degree of ion-exchange with alkaline ions was 79.1%(Na+), 41.8%(K+) and 2.5%(Cs+), and the chemical compositions for the ion-exchanged compounds were Rb1.27Na6.33H0.40Nb22O59·6.1H2O, Rb3.06K3.34H1.60Nb22O59·5.1H2O and Rb6.22Cs0.20H1.58Nb22O59·1.9H2O. The ion-exchange of H7.71Rb0.29Nb22O59·8.9H2O with alkaline ions was also attempted.
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