EXTRACTION AND TRANSPORT OF NA+ AND K+ IN A LIQUID MEMBRANE CONTAINING CROWN ETHERS - EFFECT OF THE MIXED-SOLVENT

被引：8

作者：

DERNINI, S ^{[1
]}

PALMAS, S ^{[1
]}

POLCARO, AM ^{[1
]}

MARONGLU, B ^{[1
]}

机构：

[1] DIPARTIMENTO SCI CHIM,I-09123 CAGLIARI,ITALY

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1992年 / 37卷 / 02期

关键词：

D O I：

10.1021/je00006a039

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Transport rates for K+ and Na+ have been measured in a bulk liquid membrane containing dibenzo-18-crown-6 as the carrier and employing chloroform, 1,2-dichloroethane, nitrobenzene, and their binary solutions as the solvent. Also distribution ratios for liquid-liquid extraction of K+ and Na+ from aqueous solutions into organic solvents containing the crown ether are reported. In both membrane transport experiments and solvent extraction determinations, a maximum value of the transport rate v and of the distribution ratio m, respectively, is obtained when an equimolar solution of chloroform and nitrobenzene is used as the solvent.

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页码：281 / 284

页数：4

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