Extraction of U(VI) by the ionic liquid hexyltributylphosphonium bis(trifluoromethylsulfonyl)imides: An experimental and theoretical study
Separation and Purification Technology(2017)
摘要
•A large distribution ratio of U(VI) was observed by using P6,4,4,4NTf2 with TBP.•The IL P6,4,4,4NTf2 can extract U(VI) in the absence of other extractants.•DFT calculation shows the outer-sphere coordination of NTf2 with U(VI).•Intramolecular interaction in P6,4,4,4NTf2 is responsible for its extraction ability.
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关键词
Extraction,Uranium,Ionic liquids,Mechanism,DFT calculation
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