Effect of the Introduction of Amide Oxygen into 1,10-Phenanthroline on the Extraction and Complexation of Trivalent Lanthanide in Acidic Condition

被引：37
|
作者：
Kobayashi, T. [1 ,2 ]
Yaita, T. [1 ,2 ]
Suzuki, S. [1 ]
Shiwaku, H. [1 ]
Okamoto, Y. [1 ]
Akutsu, K. [1 ,2 ]
Nakano, Y. [2 ]
Fujii, Y. [2 ]
机构：
[1] Japan Atom Energy Agcy, Actinide Coordinat Chem Grp, Quantum Beam Sci Directorate, Sayo, Hyogo 6795148, Japan
[2] Ibaraki Univ, Fac Sci, Dept Mat & Biol Sci, Mito, Ibaraki 310, Japan
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2010年 / 45卷 / 16期
关键词：
actinide; extraction; lanthanide; separation; SEPARATION; EQUILIBRIA;
D O I：
10.1080/01496395.2010.510094
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The extractability and complexation properties of lanthanides with N-alkyl-N-phenyl-1,10-phenanthroline-2-carboxamide were investigated. These ligands, which contain two aza-aromatic donors and an oxygen donor in a molecule, are newly developed extractants for actinides and lanthanides. N-Octyl-N-tolyl-1,10-phenanthroline-2-carboxamide exhibited high extractability of Eu3+ even under acidic conditions. In addition, strong complexation in acidic media was confirmed by spectroscopic titration experiments. Investigation of the complexation equilibrium revealed that the presence of an oxygen donor promotes ligand coordination with lanthanides over the competing protonation reaction in acidic solution.
引用
收藏
页码：2431 / 2436
页数：6
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