Systematic Modifications of BTP-type Ligands and Effects on the Separation of Trivalent Lanthanides and Actinides

被引：16
作者：
Beele, Bjoern B. [1 ,2 ]
Muellich, Udo [2 ]
Schwoerer, Felicitas [1 ]
Geist, Andreas [2 ]
Panak, Petra J. [1 ,2 ]
机构：
[1] Heidelberg Univ, Inst Phys Chem, D-69120 Heidelberg, Germany
[2] Karlsruher Inst Technol, Inst Nukl Entsorgung, D-76021 Karlsruhe, Germany
来源：
ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR SUSTAINABLE FUEL CYCLES | 2012年 / 7卷
关键词：
Partitioning; N-donor ligands; TRLFS; liquid-liquid extraction; SELECTIVE EXTRACTION; EU(III); AM(III);
D O I：
10.1016/j.proche.2012.10.025
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
In this study the separation of Am(III) from Eu(III) in nitric acid using two BTP-type N-donor ligands, 2,6-bis(6-ethyl-1,2-diazine-3-yl)pyridine (Et-BDP) and 2,6-bis(4-(n)propyl-2,3,5,6-tetrazine-1-yl) pyridine (Pr-n-tetrazine) is presented. The extraction and separation properties of both ligands are tested by two phase liquid-liquid extraction at different acid concentrations. In contrast to Pr-n-BTP the bisdiazinyl ligand Et-BDP is prone to protonation at nitric acid concentrations of 0.2 M and higher. A separation factor of SFAm/Eu approximate to 5 is obtained using Et-BDP as extracting ligand and with Pr-n-tetrazine a SFAm/Eu of 9.1 is realized. Hereby 2-bromodecanoic acid as lipophilic anion source is needed. (C) 2012 Elsevier B. V... Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
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收藏
页码：146 / 151
页数：6
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