Bis(Dialkylphosphinylmethyl)Alkylamines as the Liquid and Membrane Extractants of Rare Earth and Trace Metal Ions

Abstract

A large number of new lipophilic mono- and bisphosphinylamines were synthesized on the basis of the Kabachnik–Fields reaction and extraction and membrane transport properties of the synthesized compounds toward the rare earth and alkaline metal were studied. Aminophosphonyls demonstrate extracting efficiency and selectivity toward Sc(III), In(III), Y(III), and Ga(III) rare earth elements. The mixture of reactants bis(dialkylphosphinylmethyl)alkylamine, and thio- and dithiophosphoric acid shows selectivity toward lithium ions.

GRAPHICAL ABSTRACT

Keywords:

• Aminophosphoryl compounds
• extraction properties
• rare earth metals

Acknowledgments

This work was carried out under the financial support of the Russian Foundation for Basic research (grant no. 10-03-00580).