The Mechanism of the Sorption of Monovalent Cations on Cobalt(II)-hexacyanoferrate(II)
Open Access
- 1 October 1978
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 33 (10) , 1099-1101
- https://doi.org/10.1515/znb-1978-1010
Abstract
Cobalt(II)-M-hexacyanoferrate(II), M = K, NH4, Cs, as synthetic sorbents have ion exchange properties selective for monovalent cations. They show a higher selectivity for the ions with larger crystal radius if the sorption takes place in dilute solutions, whereas in concentrated sulutions the selectivity sequence is reversed. The phenomenon is attributed to the differences in physico-chemical properties of the given pair of competing ions in the solution phase and to steric limitations in the phase of ion exchanger.Keywords
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