Ion exchange in fused salts. Part VII. Ion-exchange isotherms for thallium(I)–potassium and rubidium–potassium on crystalline zirconium phosphate in molten thallium nitrate–potassium nitrate and rubidium nitrate–potassium nitrate mixtures at 360 °C
Abstract
Ion-exchange isotherms for Tl+–K+ and Rb+–K+ on crystalline zirconium phosphate in molten Tl[NO3]–K[NO3] and Rb[NO3]–K[NO3] mixtures are almost fully reversible processes which occur in several steps either via a two-phase transition or a solid–solution mechanism. There is a strong dependence of the gradients of the isotherms on the polarisability of the exchanging cations, and some of the equilibrium constants have been calculated.
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