Effect of solvent in competitive alkali metal cation transport across bulk liquid membranes by a lipophilic lariat ether carboxylic acid carrier

被引：33
|
作者：
Bartsch, RA [1 ]
Jeon, EG
Walkowiak, W
Apostoluk, W
机构：
[1] Texas Tech Univ, Dept Chem & Biochem, Lubbock, TX 79409 USA
[2] Wroclaw Tech Univ, Inst Inorgan Chem & Met Rare Elements, PL-50370 Wroclaw, Poland
来源：
JOURNAL OF MEMBRANE SCIENCE | 1999年 / 159卷 / 1-2期
关键词：
coupled; facilitated transport; liquid membranes; lariat ether carboxylic acid; crown ether; bulk liquid membrane transport; alkali metal cations; membrane solvent variation;
D O I：
10.1016/S0376-7388(99)00054-X
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Fluxes and selectivities for competitive alkali metal cation transport across bulk liquid membranes by the lipophilic crown ether carboxylic acid carrier sym-(octyl)dibenzo-16-crown-5-oxyacetic acid have been determined in a variety of chlorinated hydrocarbon and aromatic hydrocarbon solvents. The membrane solvents include: dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane, 1,1,1-trichloroethane, o-dichlorobenzene, toluene and p-xylene. The total alkali metal cation and Na+ fluxes, as well as the Na+/K+ and Na+/Li+ transport selectivity ratios, are compared with selected properties of these organic solvents using the Schmidt, Swain, Koppel-Palm and Kamlet-Taft models. The best correlations are obtained for the Na+ flux and the Na+/K+ transport selectivity. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：123 / 131
页数：9
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