Study on synergistic effects of rare earths (La, Nd, Sm, Eu) with mixture of triphenylphosphin oxide and 2-ethylhexyl 2-ethylhexyl phosphonic acid from nitric acid solutions

Abstract

The extraction of rare earth elements (La, Nd, Sm. Eu) by mixture oftriphenylphosphin oxide and 2-ethylhexyl 2-ethylhexyl phosphonic acid from nitric acid solutions has been developed. The influence of various factors such as the nitric acid concentrations, triphenvlphosphin oxidcllethylhexyl 2-ethylhexyl phosphonic acid ratio .... on the Sk has been reported.