Task-specific ionic liquids bearing 2-hydroxybenzylamine units: synthesis and americium-extraction studies |
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Authors: | Ouadi Ali Gadenne Benoît Hesemann Peter Moreau Joel J E Billard Isabelle Gaillard Clotilde Mekki Soufiane Moutiers Gilles |
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Institution: | IReS, CNRS/IN2P3-ULP Chimie Nucléaire, B.P. 28, 67037 Strasbourg Cedex 2, France. ali.ouadi@ires.in2p3.fr |
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Abstract: | The synthesis of two task-specific ionic liquids (TSILs) bearing 2-hydroxybenzylamine entities is described. These compounds are based on an imidazolium substructure onto which one hydrobenzylamine-complexing moiety is grafted. We have demonstrated that, whether pure or diluted, TSIL is able to extract americium ions. Furthermore, recovery of americium from the IL phase into a receiving phase can be achieved under acidic conditions. A possible mechanism for the metal-ion partitioning is presented, in which the extraction system is driven by an ion-exchange mechanism. |
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Keywords: | americium green chemistry ion exchange ionic liquids solvent extraction |
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