Ionic liquids as multifunctional extraction media

研究了离子液体螯合萃取体系中萃取物在离子液体相中的稳定性。在金属萃取为配位不饱和（水合）中性络合物的情况下，发现该物种可以通过配位水分子与离子液体阴离子在萃取相中的配体交换反应来稳定。相反，作为配位饱和阴离子络合物的新型萃取物种，一些金属阳离子、无卤素阴离子螯合萃取剂和卤素阴离子的阴离子三元络合物被稳定在萃取相中

It was researched how extracted species are stabilized in ionic liquid phase on ionic liquid chelate extraction system. On the case of metal extraction as coordinatively-unsaturated (hydrated) neutral complexes, it was found that the species can be stabilized by ligand-exchange reaction of the coordinating water molecules to ionic liquid anionsin the extraction phase. On the contrary, as novel-type extracted species as coordinatively-saturated anionic complexes, it was suggested that some anionic ternary complexes of metal cations, halogen-free anionic chelating extractants and halide anions are stabilized in the extraction phase