Abstract

P. Latha Raj

A new thermally stable three component inorganic ion exchanger cerium (IV) phosphotungstate have been synthesized and the sample with maximum ion exchange capacity and almost total regeneration has been chosen for further studies. The product has been characterized by IR and TGA studies. The chemical composition (Ce : P : W = 3 : 1 : 1 ), chemical stability, distribution coefficients for ten metal ions, change in its capacity with ionic radii, effect of temperature on ion exchange capacity and effect of electrolyte concentration on distribution coefficients of metal ions have been studied. The quantitative separations like Pb²⁺ – Hg²⁺, Pb²⁺ – Ni²⁺, Pb²⁺ – Cd²⁺ and Pb²⁺ – Zn²⁺ have been achieved on cerium (IV) phosphotungstate columns.

Cerium (IV) phosphotungstate; Inorganic ion exchanger; Distribution coefficient; Binary separation

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