Synergic extraction of lanthanoids by mixtures of LIX 54 (high molecular weight beta-diketone) and bidentate neutral amines. |
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Authors: | Shigeto Nakamura Shuichi Takei Kenichi Akiba |
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Institution: | Hachinohe National College of Technology, Tamonoki, Japan. |
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Abstract: | The synergic extraction of lanthanoids has been investigated using mixtures of high molecular weight beta-diketone, LIX 54 (HA; major component, 1-phenyl-3-isoheptyl-1,3-propanedion) and bidentate neutral ligands (S) in toluene. The distribution behavior of bidentate amines (2,2'-bipyridine (bpy), 1,10-phenanthroline (phen) and 2,9-dimethyl-1,10-phenanthroline (dmp)) was investigated and their related equilibrium constants were evaluated. The synergic effect is produced by the formation of such adduct complexes as MA3 x S. The extraction constants with LIX 54 alone and those in the presence of bidentate ligands were determined for lanthanoid-series elements. |
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