Synergistic Extraction of Lanthanides(III) with 2-Thenoyltrifluoroacetone and Pyridine as Ion-Pairs and Adducts

Abstract

The extraction of lanthanides(III) (Ln(III)) from a 0.1 M sodium perchlorate solution with 2-thenoyltrifluoroacetone (Htta, HA) with pyridine (Py) into chloroform was investigated in a thermostatted room at 298 K, in order to examine in detail the variation of the reactivity of Ln(tta) 3 with an N-donor ligand across the lanthanide series. It was found that i) The extracted species was the ion-pair