Journal Article

FZJ-2021-00953

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Selective extraction of trivalent actinides using CyMe4BTPhen in the ionic liquid Aliquat-336 nitrate

Zsabka, P. ; Van Hecke, K. ; Adriaensen, L. ; Wilden, A.FZJ* ; Modolo, G.FZJ* ; Verwerft, M. ; Binnemans, K. ; Cardinaels, T. (Corresponding author)

2021
RSC Publishing London

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Please use a persistent id in citations: http://hdl.handle.net/2128/27123  doi:10.1039/D0RA10445K

Abstract: The extraction of Am(iii), Cm(iii) and Eu(iii) by 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline (CyMe4BTPhen) from nitric acid solution was studied using the ionic liquid Aliquat-336 nitrate ([A336][NO3]) as diluent. Results show a high selectivity of the solvent for Am(iii) and Cm(iii) over Eu(iii), but rather slow extraction kinetics. The kinetics of CyMe4BTPhen were largely improved by the addition of 0.005 mol L−1 N,N,N′,N′-tetra-n-octyl-diglycolamide (TODGA) as a phase transfer reagent and by the use of 1-octanol as co-diluent. The addition of the phase transfer catalyst and co-diluent did not compromise the selectivity towards the actinide/lanthanide separation and thus this four-component system can be successfully applied to separate Am(iii) and Cm(iii) from the lanthanides.

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Contributing Institute(s):

1. Nukleare Entsorgung und Reaktorsicherheit (IEK-6)

Research Program(s):

1. 141 - Nukleare Entsorgung (POF4-141) (POF4-141)

Appears in the scientific report 2021

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