Synergic extraction of cobalt(II) by thenoyltrifluoroacetone and some amine extractants in chloroform |
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| Affiliation: | 1. College of Chemical Engineering, Xiangtan University, Xiangtan, Hunan 411105, PR China;2. ICCOM Institute, National Research Council, via Madonna del Piano 10, 50019 Sesto Fiorentino, Florence, Italy;3. Department of Chemistry, School of Science, The University of Jordan, Amman, 11942, Jordan;4. CSIRO Energy, 71 Normanby Road, Clayton North, VIC 3169, Australia;5. Engineering Research Center for Low-Carbon Chemical Processes and Resource Utilizations of Hunan Province, Xiangtan, Hunan 411105, PR China;1. College of Chemical Engineering, Xiangtan University, Xiangtan, Hunan 411105, PR China;2. CSIRO Energy, 71 Normanby Road, Clayton North, Victoria 3169, Australia;1. College of Chemical Engineering, Xiangtan University, Xiangtan, Hunan 411105, PR China;2. CSIRO Energy, 71 Normanby Road, Clayton North, VIC 3169, Australia;3. Department of Chemistry, School of Science, The University of Jordan, Amman 11942, Jordan;4. ICCOM Institute, National Research Council, via Madonna del Piano 10, 50019 Sesto F.no, Florence, Italy |
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| Abstract: | Synergic extraction of Co2+ with thenoyltrifluoroacetone and eight different amines in chloroform was investigated. It is found that the extracted adducts have the general formula Co(TTA)2·B, where B stands for the amine. The stability sequence of the adducts obtained as related to the different classes of benzylamines is; dibenzylamine > benzylamine ⩽ tribenzylamine. A linear decrease in log β with the increase of Taft inductive constant was obtained on using tertiary long chain alkylamines as synergic ligand. UV and IR spectroscopic investigations support the direct bonding of the amine to the metal. |
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