Task-specific ionic liquids bearing 2-hydroxybenzylamine units: synthesis and americium-extraction studies.
The synthesis of two task-specific ionic liquids (TSILs) bearing 2-hydroxybenzylamine entities is described. These compounds are based on an imidazolium substructure onto which one hydrobenzylamine-complexing moiety is grafted. We have demonstrated that, whether pure or diluted, TSIL is able to extract americium ions. Furthermore, recovery of americium from the IL phase into a receiving phase can be achieved under acidic conditions. A possible mechanism for the metal-ion partitioning is presented, in which the extraction system is driven by an ion-exchange mechanism.
Ouadi
Ali
A
IReS, CNRS/IN2P3-ULP Chimie Nucléaire, B.P. 28, 67037 Strasbourg Cedex 2, France. ali.ouadi@ires.in2p3.fr
Gadenne
Benoît
B
Hesemann
Peter
P
Moreau
Joel J E
JJ
Billard
Isabelle
I
Gaillard
Clotilde
C
Mekki
Soufiane
S
Moutiers
Gilles
G