Add time:07/23/2019         Source:sciencedirect.com

The use of the “snake in a cage” amphoteric ion-exchange resin Retardion 11A8 for various separations of inorganic ions was investigated.Clean separations of Ga(III)In(III)Tl(III), Pt(II)Pd(II), and Na(I)Ni(II)Cu(II)Zn(II) mixtures have been achieved. In acidic media, in which the resin acts mainly as an anion exchanger, some residual activity of the acrylate polyanion seems to exist, resulting in significant changes in distribution coefficients in comparison with standard anion-exchange resins. In the case of elements that can exist as both cations and anions in solution (e.g., Ni, Co, Cu and Zn), the amphoteric properties of Retardion 11A8 permit more specific isolation of certain elements from complex mixtures than would be possible with the use of monofunctional ion exchangers.

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