Extraction of U(VI), Th(IV), and REE(III) from Nitric Acid Solutions with 2,6-Bis(diphenylphosphorylmethyl)pyridine N-Oxide

А Н Туранов ,A Yu Tsivadze,В К Карандашев ,И П Калашникова ,В Е Баулин

doi:10.1134/s1066362218030049

Extraction of U(VI), Th(IV), and REE(III) from Nitric Acid Solutions with 2,6-Bis(diphenylphosphorylmethyl)pyridine N-Oxide

А Н Туранов , A Yu Tsivadze + Show 3 more

https://doi.org/10.1134/s1066362218030049

Copy DOI

Journal: Radiochemistry	Publication Date: May 1, 2018
Citations: 5

Affiliation: Institute of Solid State Physics, Frumkin Institute of Physical Chemistry and Electrochemistry, Institute of Microelectronics Technology and High Purity Materials, National University of Science and Technology, Moscow Power Engineering Institute, Moscow Aviation Institute, Institute of Physiologically Active Compounds

#Pyridine N-Oxide #Equilibrium Aqueous Phase + Show 8 more

Abstract
Full-Text PDF
Similar Papers

Abstract

The extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO3 solutions in the form of complexes with 2,6-bis(diphenylphosphorylmethyl)pyridine N-oxide (I) was studied in relation to the kind of organic diluent and to the HNO3 concentration in the equilibrium aqueous phase. The stoichiometry of the extractable complexes was determined. With respect to the ability to extract Th(IV) and REE(III), compound I considerably surpasses tetraphenylmethylenediphosphine dioxide and tetraalkyl-substituted analogs of I.

Full Text