Insights into the synergistic selectivity of 4f-ions implementing 4-acyl-5-pyrazolone and two new unsymmetrical NH-urea containing ring molecules in an ionic liquid
作者： Maria Atanassova , Stanislava Todorova , Vanya Kurteva , Nina Todorova
DOI: 10.1016/J.SEPPUR.2018.04.071
关键词:
摘要: Abstract Adept representatives of light, middle and heavy rare earths metals, the trivalent lanthanoids La, Eu, Lu were selected for synergistic solvent extraction by using an ionic liquid, 1-methyl-1,3-butylimidazolium-bis(trifluoromethanesulfonyl)imide. The process was carried out with mixtures a chelating extractant (HL), 3-methyl-4-(4-methylbenzoyl)-1-phenyl-pyrazol-5-one (HPMMBP) two novel synthesized compounds. latter consisted unsymmetrical NH-urea fragments attached to p-cresol scaffold (S1 S2). To elucidate mechanistic aspects reveal nature formed metal species in organic phase, slope analysis data deduced compared results solution chemistry. From this, effects caused CHON based molecular agents on extraction-separation efficiency aforementioned earth elements investigated. Furthermore, enhancement separation factors between lanthanoid metals also evaluated. Finally, testing applicability these new enforced ligands competitive removal ions from leach containing various s- d-cations.
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