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Licensed Unlicensed Requires Authentication Published by De Gruyter (O) September 25, 2009

The role of oxidants in Pu-Th separation studies employing di(2-ethylhexyl)isobutyramide (D2EHIBA) as extractant

P.N. Pathak, D. R. Prabhu and V. K. Manchanda
From the journal Radiochimica Acta


Distribution studies of Pu and Th have been carried out under varying acidity/ligand concentrations to optimise the conditions for their separation employing di(2-ethylhexyl)isobutyramide (D2EHIBA) in n-dodecane as extractant. In view of the selective complexation of D2EHIBA towards hexavalent metal ions over tetravalent metal ions, the focus of the present work is to identify a suitable oxidant of Pu. Amongst various oxidising agents investigated for the oxidation of Pu to Pu(VI), AgO appears to be a promising candidate as (i) it is thermodynamically as well as kinetically a favourable oxidant and (ii) unlike Cr(VI) and Ce(IV), it is not co-extracted with Pu towards the organic phase.

Published Online: 2009-9-25
Published in Print: 2003-3-1

© 2003 Oldenbourg Wissenschaftsverlag GmbH

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