Comparison of uranyl extraction mechanisms in an ionic liquid by use of malonamide or malonamide-functionalized ionic liquid
作者： Marieke Bonnaffé-Moity , Ali Ouadi , Valérie Mazan , Stanislav Miroshnichenko , Dariia Ternova
DOI: 10.1039/C2DT12421A
关键词:
摘要: The extraction of uranyl from acidic (HNO3) aqueous solutions toward an ionic liquid phase, C1–C4–imTf2N (1-methyl,3-butylimidazolium Tf2N), has been investigated as a function initial acid concentration and ligand for two different extracting moieties: classical malonamide, N,N′-dimethyl-N,N′-dibutylmalonamide (DMDBMA) functionalized IL composed the Tf2N− anion imidazolium cation on which malonamide pattern grafted (FIL-MA). mechanism, demonstrated through influence added C1–C4–imCl or LiTf2N in is slightly between DMDBMA FIL-MA agents. Modeling data evidences double with exchange UO22+versus 2 H+ versus C1–C4 -im+ at low values, [UO2(NO3)3]−versus both ligands high HNO3 concentrations. molecule more efficient than its parent.
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