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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Editor-in-Chief: Qaim, Syed M.

IMPACT FACTOR 2018: 1.339

CiteScore 2018: 1.20

SCImago Journal Rank (SJR) 2018: 0.333
Source Normalized Impact per Paper (SNIP) 2018: 0.720

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Volume 97, Issue 12


Extraction of americium(III) from nitric acid medium by CMPO-TBP extractants in ionic liquid diluent

A. Rout / K. A. Venkatesan / T. G. Srinivasan / P. R. Vasudeva Rao
Published Online: 2009-12-04 | DOI: https://doi.org/10.1524/ract.2009.1975


Extraction of americium(III) from nitric acid medium by a solution of tri-n-butylphosphate (TBP) and n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in room temperature ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (bmimNTf2), was studied and the results were compared with that obtained with CMPO-TBP in n-doddecane (n-DD). The distribution ratio of 241Am(III) in TBP-CMPO/bmimNTf2 was measured as a function of various parameters such as concentrations of nitric acid, CMPO, bmimNO3, NaNO3 and TBP and temperature. Remarkably large distribution ratios were observed for the extraction of americium(III) when bmimNTf2 acted as diluent and the extraction was insignificant in the absence of CMPO. The stoichiometry of metal–solvate in organic phase was determined by the slope analysis of extraction data and it indicated the formation of 1:3 (Am:CMPO) complex in organic phase. Viscosity of TBP-CMPO/bmimNTf2 at various temperatures and enthalpy change accompanied by the extraction of americium(III) were determined and reported in this paper.

Keywords: Room temperature ionic liquid; Americium; TRUEX solvent; Extraction; n-Octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide

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* Correspondence address: Indira Gandhi Centre for Atomic Research, Chemistry group, 603 102 Kalpakkam - Tamil Nadu, Indien,

Published Online: 2009-12-04

Published in Print: 2009-12-01

Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, Volume 97, Issue 12, Pages 719–725, ISSN (Print) 0033-8230, DOI: https://doi.org/10.1524/ract.2009.1975.

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