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International Letters of Chemistry, Physics and Astronomy
Volume 30

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Study on Halide Ions Selectivity of Nuclear Grade Anion Exchange Resin Auchlite ARA-9366

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Abstract:

The selectivity behaviour of nuclear grade anion exchange resin Auchlite ARA-9366 in chloride form towards iodide and bromide ions in the solution was studied. The trend in selectivity of the resin was predicted on the basis of thermodynamics of Clˉ/Iˉ and Clˉ/Brˉ uni-univalent ion exchange reactions. It was observed that the equilibrium constants K values for Clˉ/Iˉ ion exchange reaction were higher than that calculated for Clˉ/Brˉ exchange under identical experimental conditions. Also the enthalpy values for the two uni-univalent ion exchange reactions were calculated as -47.87 and -36.14 kJ/mol respectively. The high K and low enthalpy values obtained for Clˉ/Iˉ ion exchange reaction as compared to that obtained during Clˉ/Brˉ exchange supports higher selectivity of the resin towards iodide ions as compared to that towards bromide ions, when both the ions are present in the same solution.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 30)
Pages:
67-73
DOI:
10.18052/www.scipress.com/ILCPA.30.67
Citation:
P.U. Singare and A.N. Patange, "Study on Halide Ions Selectivity of Nuclear Grade Anion Exchange Resin Auchlite ARA-9366", International Letters of Chemistry, Physics and Astronomy, Vol. 30, pp. 67-73, 2014
Online since:
Mar 2014
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