Ion-Exchange-Induced Transformation and Mechanism of Cooperative Crystal Chemical Adaptation in Sitinakite: Theoretical and Experimental Study

• Published in: Minerals
• Main Authors: Taras L. Panikorovskii, Galina O. Kalashnikova, Anatoly I. Nikolaev, Igor A. Perovskiy, Ayya V. Bazai, Victor N. Yakovenchuk, Vladimir N. Bocharov, Natalya A. Kabanova, Sergey V. Krivovichev
• Format: Text
• Language: English
• Published: Multidisciplinary Digital Publishing Institute 2022
• Subjects: sitinakite; titanosilicate; IONSIV IE-911; La 3+; ion-exchange; crystal structure; ordering; ion migration; Arctic; Khibiny
• Online Access: https://doi.org/10.3390/min12020248

The microporous titanosilicate sitinakite, KNa2Ti4(SiO4)2O5(OH)·4H2O, was first discovered in the Khibiny alkaline massif. This material is also known as IONSIV IE-911 and is considered as one of the most effective sorbents for Cs+ and Sr2+ from water solutions. We investigate a mechanism of coopera...