M. Atanassova, I. Dukov
Dec 1, 2004
Citations
1
Influential Citations
51
Citations
Journal
Separation and Purification Technology
Abstract
Abstract The solvent extraction of La, Nd, Eu, Ho and Lu with 4-benzoyl-3-methyl-1-phenyl-2-pyrazolin-5-one (HP) and the quaternary ammonium salt aliquat 336 in the chloride (QCl) and perchlorate (QClO 4 ) forms in CHCl 3 , CCl 4 and C 6 H 12 has been studied. On the basis of the slope analysis, the composition of the extracted species was determined as Q + [LnP 4 ] − (Q + is the quaternary ammonium salt cation). The values of the equilibrium constant were obtained. The effect of the diluents and the anions of the salt on the metal extraction and separation was determined. The possible interaction between the extractants and its influence on the synergistic extraction process have been discussed.