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Vol.42, No.10, 829 ~ 835, 2004
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| Title |
| Solvent Extraction of Sm from Chloride Solution with PC88A |
| 이만승 Man Seung Lee , 이광섭 Gwang Seop Lee , 이진영 Jin Young Lee , 김성돈 Sung Don Kim , 김준수 Joon Soo Kim |
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| Abstract |
| Solvent extraction experiments of Sm were performed from chloride solution with PC88A and saponified PC88A. Solvent extraction reaction of Sm with PC88A and the corresponding equilibrium constant were evaluated from the experimental and ionic equilibria data as follows Sm^(3+)_(aq)+ 1.5H₂A_(2,org)= SmA_(3,org)+ 3H^(+)_(aq) , K = 0.33. The predicted distribution coefficients of Sm agreed well with the experimental results. The distribution coefficients of Sm with saponified PC88A and the values of equilibrium pH depended on the initial extraction conditions. When the concentration of PC88A was in excess of that of Sm, saponification of PC88A greatly enhanced the extraction of Sm. (Received June 21, 2004) |
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| Key Words |
| SmCl3, PC88A, Extraction, Saponification, Equilibrium constant |
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