SYNERGISTIC EXTRACTION OF EUROPIUM(III) WITH BENZOIC ACID AND THENOYLTRIFLUOROACETONE |
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| Authors: | Yuko Hasegawa Takahisa Nakano Gregory R. Choppin |
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| Affiliation: | 1. Department of Chemistry , Science University of Tokyo , Kagurazaka Shinjuku-ku, Tokyo, 162, Japan;2. Department of Chemistry , Florida State University , Tallahassee, Florida, 32306 |
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| Abstract: | ABSTRACT The solvent extraction of europium(III) into solutions of thenoyltrifluoroacetone and benzoic acid in cyclohexane, carbon tetrachloride, benzene, chloroform, pentachloroethane, and tetrachloroethane has been measured at 25°C. It has been found that the extracted species involve two types of adducts, EuA3· HB and EuA3· 2HB where A denotes the TTA anion and HB the benzoic acid monomer. The magnitude of the adduct formation constants in different solvents has been correlated with the dimerization constants of benzoic acid in the solvents. |
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