Highly Selective Synergism for the Extraction of Lanthanoid(III) Ions with β-Diketones and Trioctylphosphine Oxide in an Ionic Liquid

被引：31

作者：

Okamura, Hiroyuki ^{[1
,2
]}

Takagi, Hitomi ^{[1
]}

Isomura, Taku ^{[1
]}

Morita, Kotaro ^{[1
]}

Nagatani, Hirohisa ^{[1
]}

Imura, Hisanori ^{[1
]}

机构：

[1] Kanazawa Univ, Inst Sci & Engn, Fac Chem, Kanazawa, Ishikawa 9201192, Japan

[2] Japan Atom Energy Agcy, Nucl Sci & Engn Directorate, Div Chem Nucl Engn, Tokai, Ibaraki 3191195, Japan

来源：

ANALYTICAL SCIENCES | 2014年 / 30卷 / 03期

关键词：

Ionic liquid; synergistic effect; lanthanoid(III); beta-diketone; trioctylphosphine oxide; CHELATE EXTRACTION; PHYSICAL-PROPERTIES; SOLVENT-EXTRACTION; 2-THENOYLTRIFLUOROACETONE; THENOYLTRIFLUOROACETONE; 18-CROWN-6; EXCHANGE; SYSTEMS; METALS; CATION;

D O I：

10.2116/analsci.30.323

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Selective synergism for the extraction of lanthanoids(III) (Ln) with beta-diketones such as 2-thenoyltrifluoroacetone, 2-naphthoyltrifluoroacetone, and benzoylacetone has been investigated in the presence of trioctylphosphine oxide as a hydrophobic neutral ligand in 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide as an ionic liquid. The extractability of heavier Ln was remarkably enhanced, resulting in a significant improvement in the separation of Ln. It was found that the present synergism is ascribed to the formation of cationic ternary complexes, followed by ion exchange into the ionic liquid.

引用

页码：323 / 325

页数：3

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