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Selective Extraction of Americium from Curium and the Lanthanides by the Lipophilic Ligand CyMe4BTPhen Dissolved in Aliquat-336 Nitrate Ionic Liquid
Solvent Extraction and Ion Exchange ( IF 1.8 ) Pub Date : 2020-01-21 , DOI: 10.1080/07366299.2019.1708006
Peter Zsabka 1, 2 , Karen Van Hecke 1 , Andreas Wilden 3 , Giuseppe Modolo 3 , Marc Verwerft 1 , Koen Binnemans 2 , Thomas Cardinaels 1
Affiliation  

The feasibility of separating americium from curium and the lanthanides was studied in batch solvent extraction experiments using an organic solvent composed of 0.01 mol L−1 2,9-bis(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-1,2,4-benzotriazin-3-yl)-1,10-phenanthroline (CyMe4BTPhen) in the ionic liquid Aliquat-336 nitrate [A336][NO3] from feed solutions containing N,N,N’,N’-tetraethyl diglycolamide (TEDGA), stable lanthanide ions and tracers of 241Am, 244Cm, and 152Eu. The combined use of a lipophilic and a hydrophilic ligand with opposite selectivity for Am(III) vs. Cm(III) and Ln(III) allowed the separation of Am(III) from Cm(III) and Ln(III) from moderate acidic feed solutions (1 mol L−1 HNO3, SFAm/Cm = 3.1–3.9, SFAm/La > 75, SFAm/Eu ≥ 3000).



中文翻译:

溶解在Aliquat-336硝酸根离子液体中的亲脂性配体CyMe4BTP选择性地从Cur和镧系元素中萃取A

在间歇溶剂萃取实验中,研究了使用0.01 mol L -1 2,9-双(5,5,8,8-四甲基-5,6,7,来自含N,N的进料溶液中的离子液体Aliquat-336硝酸盐[A336] [NO 3 ]中的8-四氢-1,2,4-苯并三嗪-3-基)-1,10-菲咯啉(CyMe 4 BTPhen)N',N'-四乙基二甘醇酰胺(TEDGA),稳定的镧系离子和241 Am,244 Cm和152的示踪剂欧洲联盟。对Am(III)与Cm(III)和Ln(III)具有相反选择性的亲脂性和亲水性配体的组合使用可将Am(III)与Cm(III)和Ln(III)从中等酸性分离进料溶液(1 mol L -1 HNO 3SF Am / Cm = 3.1–3.9,SF Am / La > 75,SF Am / Eu≥3000 )。

更新日期:2020-04-20
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