CATION EXCHANGE BETWEEN COLLOIDAL CLAYS AND RESINS IN WATER  AND AQUEOUS ALCOHOL AS A FUNCTION OF THE CONCENTRATION  OF THE DISPERSED PHASE

Exchange studies have been made between varying amounts of H-resins and varying concentrations of clays saturated with NH4, Mg and Ba ions. The amounts of hydrogen ions from the resin exchanged For the cations of the clays have been determined by titrating with an alkali. Experiments with the varying amounts at H-resin yield ;Bothering which are more or leas similar in shape to ordinary adsorption isotherms in the case of Mg- and Ba- clays, but the slope is somewhat linear in the case of ammonium day. The exchange of ions usually decreases with the concentration of the clay suspension. Experiments have been carried out in aqueous as well as in aqueous-alcohol media, and the molts interpreted in terms of the hydration of cations and on the basis of the concept that exchange takes place by an overlapping of the double layers of the two solid phases