Synthesis of task-specific ionic liquids with grafted diglycolamide moiety. Complexation and stripping of lanthanides
作者： Wu Yun , Zhang Youwen , Fan Fuyou , Luo Huimin , Hu Peizhuo
DOI: 10.1007/S10967-013-2878-Z
关键词:
摘要: Task-specific ionic liquids (TSILs) of a novel class, with the diglycolamide moietity grafted in alkyl chain imidazolium cation, were synthesized and characterized. Lanthanide complexation capabilities TSILs as active components solid phase extractants evaluated by studies on adsorption lanthanides from aqueous solutions. The TSIL-based adsorbents prepared immobilization long-alkyl-chain siliceous mesostructured cellular foams adsorb trivalent lanthanides. No extraction solution into 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C6mim][Nf2T]) was observed at any acidity presence these phase. This implies that suppress formation water-soluble complexes. added to solvent systems consisting N,N,N′,N′-tetraoctyl-3-oxapentanediamide (TODGA) [C6mim][Nf2T] HNO3 solutions show very good stripping properties for
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