Synthesis and Ion-Exchange Properties of Tantalum Selenite and Its Use for the Separation of Metal Ions by Ion-Exchange Column Chromatography

Abstract

A new inorganic ion-exchanger tantalum selenite has been synthesized by mixing 0.10M Ta₂O₅ and 0.10M Na₂SeO₃. The ion-exchange properties, chemical stability, TGA and IR absorption have been studied. Some industrially important separations of Fe^3± from Mn^2±, Cu^2±, Ni^2±, Co^2±, Zn^2±, Vo^2±, A1^3±, and Ba^2±, from Ca^2±, Sr^2±, Mg^2± have been achieved on the columns of tantalum selenite. Separation of Fe^3±-Ni^2± can be applied to separate and determine Fe^3± from nickel electroplating bath.