STUDIES ON SOME NEW INORGANIC ION EXCHANGERS AND THEIR MEMBRANES

Abstract

The application of ion exchangers in the separation of similar ionic species is a well developed technique in analytical chemistry. Although the early ion exchangers were largely inorganic in origin, but subsequently, the ion exchange scene was dominated by the synthetic organic resins because of the ease with which repro ducible preparations could be made, and their excellent mechanical and chemical stability. In order to make high temperature separa tions of ionic components or the separations of ionic components in radioactive wastes, highly selective exchangers stable to temper ature and radiations are required. This has renewed the interest in inorganic materials since organic resins are unsuitable for such applications as changes in selectivity and exchange capacity occur on exposure to radiation, and degradation takes place at high temp eratures of interest.......................