Synthesis, characterization and ion exchange properties of a new inorganic ion exchange material: Zirconium(IV) iodooxalate

Abstract

A new three component inorganic ion exchange material zirconium (IV) iodooxalate (ZIO) has been synthesized by adding a mixture of 0.1<i>M </i>potassium iodate and 0.1 <i>M </i>oxalic acid to 0.1<i>M </i>&nbsp;zirconium oxychloride in different volume ratios at pH 1. Among several samples synthesized, ZIO-6 is selected for detailed studies owing to its highest ion exchange capacity and chemical stability. The material has been characterized on the basis of chemical

composition, <i>p</i>H-titration, FTIR and thermogravimetric studies. The ion exchange capacity of the material for Na⁺ ion has been found to be 2.70 meq g^-1dry exchanger. The ion exchange capacity varies and is found to be depend upon the crystal ionic radius of exchanging cations. The chemical stability of the material has been tested in acidic, neutral and basic media. The sorption studies of some metal ions have been made in distilled water and nitric acid.