Abstract

Removal of iridium(iv) using hydrophilic or hydrophobic ionic liquids was studied. IrCl62− anionic metal complexes were precipitated out from water using bromide-based ionic liquids, yielding water-insoluble salts with low Ks values. Liquid–liquid extraction of Ir(iv) using [NTf2]-based ionic liquids yielded distribution coefficients up to 70 with [OMIM][NTf2] at pH 2.

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