Premium
Ion Exchange Isotherms of Montmorillonite and Structural Factors Affecting Them
Author(s) -
Banin A.
Publication year - 1968
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.196800005
Subject(s) - chemistry , montmorillonite , ion exchange , adsorption , mineral , ion , clay minerals , cation exchange capacity , inorganic chemistry , mineralogy , organic chemistry , environmental science , soil science , soil water
The exchange isotherms of the ion pairs Ca‐Na, Ca‐K, Na‐K, Ca‐H and Na‐H on the clay mineral montmorillonite were determined. It was found that the selectivity coefficient is not constant along a given isotherm but changes with the relative fractions of the adsorbed ions. This variation is attributed to the structural properties of the mineral, namely, tactoid formation in the Ca state, and the presence of different exchange sites affecting the energy of exchange.