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Experimental connections between aqueous-aqueous and aqueous-ionic liquid biphasic systems

Abstract : Aqueous-ionic liquid (A-IL) biphasic systems containing deuterated water, deuterated nitric acid (10_2 M to 7 M) and either [C1C4im+][Tf2N_], [C1C10im+][Tf2N_] or [Me3BuN+][Tf2N_] have been examined in terms of water and acid solubilities in the IL-rich phase and in terms of IL cation and anion solubilities in the waterrich phase. Other experiments focused on the IL cation and anion solubility in the water-rich phase upon addition of either [C1C4im+][Cl_] or [Li+][Tf2N_]. The results evidence a complex interplay between all negatively and positively charged ions of the samples that could be described following the usual approach used for aqueous-aqueous (A-A) biphasic systems. Other examples from the literature are discussed and demonstrate that the frontier between A-A and A-IL systems is questionable. Predictions are made for the extraction of metallic ions by use of biphasic systems in this work that are successfully compared to literature data.
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Contributor : Brigitte Gaillard <>
Submitted on : Thursday, March 20, 2014 - 9:43:27 AM
Last modification on : Thursday, November 19, 2020 - 1:50:07 PM

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V. Mazan, I. Billard, Nicolas Papaiconomou. Experimental connections between aqueous-aqueous and aqueous-ionic liquid biphasic systems. RSC Advances, Royal Society of Chemistry, 2014, 4, pp.13371-13384. ⟨10.1039/c4ra00645c⟩. ⟨in2p3-00961408⟩



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