THE THERMODYNAMICS OF EXTRACTION OF SOME LANTHANIDE AND OTHER IONS BY DINONYLNAPHTHALENESULPHONIC ACID

被引：19

作者：

OTU, EO ^{[1
]}

WESTLAND, AD ^{[1
]}

机构：

[1] UNIV OTTAWA,DEPT CHEM,OTTAWA K1N 6N5,ONTARIO,CANADA

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 1990年 / 8卷 / 06期

关键词：

D O I：

10.1080/07366299008918033

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The thermodynamics of extraction of some lanthanide ions and bismuth, aluminium, calcium and zinc ions from perchloric acid into solutions of dinonylnaphthalenesulphonic acid have been studied. Extraction of the trivalent ions is dominated by the entropy of complexing. Electrostriction of large complex micelles by the complexed ion is postulated in order to account for the entropy effect. In the case of divalent ions, the enthalpy of dehydration of the ion is more important. A strategy for improving the separation factors is proposed.

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页码：827 / 842

页数：16

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