Im. Elnaggar et al., ION-EXCHANGE EQUILIBRIUM OF ALKALI METAL HYDROGEN IONS ON AMORPHOUS CERIUM(IV) ANTIMONATE/, Reactive & functional polymers, 28(2), 1996, pp. 209-214
The equilibrium exchange of alkali metal ions (Li+, Na+, K+ and Cs+)/H
+ system has been studied in MCl-HCl media at 25, 40 and 60 degrees C.
The exchange isotherms have been measured for both forward and revers
e reactions, at a solution ionic strength of 0.1, by the batch techniq
ue. On the basis of the exchange isotherms, thermodynamic parameters h
ave been calculated and some predictions made for the exchange process
taking place in the materials. The selectivity sequence shows that K < Na+ < Li+ < Cs+.