Synthesis of N-Benzoyl Phenyl Hydroxyl Amine Derivative of Styrene Divinyl Benzene Copolymer and Its Application in Separation of Zirconium from Hafnium

Abstract

Abstract A new chelating renin has been synthesized by introducing a N—benzoyl phenyl hydroxyl amine croup into styrene divinyl benzene (8 %) copolymer beads. The resin is stable in fairly strong acids but not in alkali and has been characterized by elemental analysis and by I. R. spectra. The water regain value is 0.56 g/g. The sorption patterns o-f a number o-f cations on the resin have been studied as a function of pH. The resin sorbs both Zr(IV) and Hf(IV) in the pH range 1 to 2. The maximum exchange.' capacity for Zr(IV) is reported to be 0.65 mmoles/g at pH 1.6 and ever 99 % of zr(IV) sorber has been recovered by using a mixture of 0.5 M HF and 6 M HCl both by batch operation and column technique. The method was utilized in the preconcentration and separation of Zr(IV) from Hf(IV).