Abstract
ABSTRACT An equilibrium study of the K+ -Cs+-H+ ion exchange on γ-titanium phosphate has been carried out. Isotherms for the ion exchange have been determined and phases formed during the exchange have been identified. Over the entire composition range, the exchanger prefers cesium to potassium. When 25% of exchange is reached, a solid solution of formula (with a composition varying with the equilibrium solution composition) is formed. The equilibrium constant for the substitution process K+ -Cs+ in the phase was determined. For 25-50% of exchange, two solid solutions co-exist: A phase diagram of the ternary system is given. The results are compared to those previously obtained in the study of K+ -H+ and Cs+ -H+ binary systems. An exchange mechanism is proposed.
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