Extraction of uranyl ion into ionic liquid by N,N,N᾿N᾿tetrabutylsuccinamide and spectroscopic study of uranyl complex

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• 作者：Xin Wu ; Yupeng Liu ; Shaowen Hu ; Taiwei Chu
• 关键词：Urany ; Amide ligand ; TBSA ; Extraction ; Ionic liquid
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：307
• 期：1
• 页码：161-167
• 全文大小：646 KB
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• 作者单位：Xin Wu (1)
  Yupeng Liu (1)
  Shaowen Hu (1)
  Taiwei Chu (1)
  
  1. Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Physical Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  Diagnostic Radiology
  Inorganic Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1588-2780

文摘

Interactions of uranyl with an amide ligand N,N,N′,N′-tetrabutylsuccinamide (TBSA) in ionic liquid [Bmim][NTf₂] was investigated. [UO₂(TBSA)₃]2+ is formed from uranyl and excess TBSA, with two TBSA ligands in bidentate mode and the third in monodentate mode. The efficiency of uranyl extraction by TBSA in [Bmim][NTf₂] is dependent on the aqueous nitric acid concentrations. At low HNO₃ concentration as 0.01 mol·L−1, the distribution ratio (D) is over 20 times larger than that in common organic solvents, and the extracted complex is [UO₂(TBSA)₃]2+. The D value decreases drastically with increase of HNO₃ concentration.