ABSTRACT
Three-phase extraction system of TBP-kerosene / HClO4-H2O has been studied and compared with two-phase system of TBP / HClO4-H2O. The results indicate that the composition of the middle phase and its change with the increasing aqueous acidity in the three-phase system are almost the same as that of the organic phase in two-phase system. The extraction in high acidity can be explained by the solubilization of acid and water in the aggregates formed by amphiphilic extracted complexes.
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This study is supported by The Natural Science Foundation of The States (29971020) and The Key Lab of Chem. Eng. in Qinghua University.