Relationship between Lewis acidity of organic solvents and europium(III) extraction in a synergistic system

被引：10

作者：

Hasegawa, Yuko ^{[1
]}

Tsusima, Shinpei

Noro, Junji

Kusakabe, Satoshi

机构：

[1] Tokyo Univ Sci, Dept Chem, Shinjuku Ku, Tokyo 1628601, Japan

[2] NISSAN ARC Ltd, Res Dept, Kanagawa, Japan

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 2006年 / 24卷 / 05期

关键词：

Lewis acidic solvents; synergistic extraction; water in organic phases; solvation; interaction between Lewis acid and base;

D O I：

10.1080/07366290600760748

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To discuss the difference in magnitude of the synergistic effect among organic solvents, the extraction of europium(III) with pivaloyltrifluoroacetone and/or 1,10-phenanthroline (phen) into chloroform (CHCl3), bromoform (CHBr3), pentachloroethane (C2HCl5), 1,1,2,2-tetrachloroethane (C2H2Cl4), trichloroethylene (C2HCl3), and dichloromethane (CH2Cl2) has been measured. Further, the solubility of water in the organic solvents, the hydration number of the extracted species, and the interaction between the solvents and phen have been examined by Karl Fischer coulometric titration, by the luminescence lifetime of europium(III), and by IR spectra, successively. The effect of the Lewis acidity of organic solvents on the extractability of Eu ion has been explained in terms of the interaction between the Lewis bases and the organic solvents as well as the hydration of the chelates and water content in the organic solvents.

引用

页码：663 / 676

页数：14

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