Open AccessSynergic Extraction of Lanthanoids by Mixtures of LIX 54 (High Molecular Weight β-Diketone) and Bidentate Neutral Amines
Author(s) -
Shigeto Nakamura,
Shuichi Takei,
Kenichi Akiba
Publication year - 2002
Publication title -
analytical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 73
eISSN - 1348-2246
pISSN - 0910-6340
DOI - 10.2116/analsci.18.319
Subject(s) - chemistry , denticity , lanthanide , adduct , extraction (chemistry) , diketone , toluene , equilibrium constant , medicinal chemistry , phenanthroline , molecule , inorganic chemistry , organic chemistry , crystal structure , ion
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.