Extraction of REE(III), U(VI), and Th(IV) from Nitric Acid Solutions with Carbamoylmethylphosphine Oxides in the Presence of Bis[(trifluoromethyl)sulfonyl]imide Ions
- Authors: Turanov A.N.1, Karandashev V.K.2,3, Yarkevich A.N.4
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Affiliations:
- Institute of Solid State Physics
- Institute of Microelectronics Technology and High Purity Materials
- MISIS National University of Science and Technology
- Institute of Physiologically Active Compounds
- Issue: Vol 60, No 2 (2018)
- Pages: 170-176
- Section: Article
- URL: https://journals.rcsi.science/1066-3622/article/view/224421
- DOI: https://doi.org/10.1134/S1066362218020078
- ID: 224421
Cite item
Abstract
Extraction of microamounts of REE(III), U(VI), and Th(IV) with solutions of carbamoylmethylphosphine oxides (CMPOs) in organic diluents from aqueous HNO3 solutions containing lithium bis[(trifluoromethyl) sulfonyl]imide (LiTf2N) was studied. The efficiency of the REE(III), U(VI), and Th(IV) extraction from nitric acid solutions with CMPO solutions considerably increases in the presence of Tf2N– ions in the aqueous phase. The stoichiometry of the extractable complexes was determined, and the influence of the structure of the CMPO molecule, kind of organic diluent, and aqueous phase composition on the efficiency of the U(VI), Th(IV), and REE(III) extraction into the organic phase was considered.
About the authors
A. N. Turanov
Institute of Solid State Physics
Author for correspondence.
Email: turanov@issp.ac.ru
Russian Federation, ul. Akad. Osip’yana 2, Chernogolovka, Moscow oblast, 142432
V. K. Karandashev
Institute of Microelectronics Technology and High Purity Materials; MISIS National University of Science and Technology
Email: turanov@issp.ac.ru
Russian Federation, ul. Akad. Osip’yana 6, Chernogolovka, Moscow oblast, 142432; Leninskii pr. 4, Moscow, 119991
A. N. Yarkevich
Institute of Physiologically Active Compounds
Email: turanov@issp.ac.ru
Russian Federation, Severnyi proezd 1, Chernogolovka, Moscow oblast, 142432