作者: Maria Atanassova , Vanya Kurteva
DOI: 10.1007/S10953-019-00844-8
关键词:
摘要: The solvent extraction of Eu(III) from an aqueous chloride phase into hydrophobic ionic liquids (ILs), 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imides ([C1Cnim+][Tf2N−], n = 4, 6, 8 and 10), by β-diketone 2-thenoyltrifluoroacetone (HTTA) alone in combination with N,N-diisobutyl-2-(octylphenylphosphoryl)acetamide (CMPO) was investigated. interaction between the two extractants (acidic/neutral) deuterochloroform has been studied 1H, 13C, 19F 31P NMR spectra NOESY experiments. 1H Q-NMR analytical techniques were also applied for determination [C1C4im+] [Tf2N−] entities transferred phase. efficiently extracted HTTA/[C1Cnim+][Tf2N−] HTTA/CMPO/[C1Cnim+][Tf2N−] systems but a relatively small synergism established. A cation mechanism proposed via log–log slope analysis method. effect IL alkyl chain length on process as well.