EXTRACTION OF SODIUM IN BIS (2,4,4-TRIMETHYLPENTYL) PHOSPHINIC ACID CYANEX 272 TM - BASIC CONSTANTS AND EXTRACTION EQUILIBRIA

被引：31
|
作者：
FU, X [1 ]
HU, ZS [1 ]
LIU, Y [1 ]
GOLDING, JA [1 ]
机构：
[1] UNIV OTTAWA,DEPT CHEM ENGN,OTTAWA K1N 6N5,ONTARIO,CANADA
来源：
SOLVENT EXTRACTION AND ION EXCHANGE | 1990年 / 8卷 / 4-5期
关键词：
D O I：
10.1080/07366299008918018
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A study has been made of the extraction of sodium into bis (2,4,4 - trimethylpentyl) phosphinic acid. The following basic constants were measured at 25°C using two-phase titration techniques: the solubility in water, S, the ionization constant, pKa, the dimerization constant, K2 and the distribution coefficient, Kd. The results were found to be in agreement with values reported in the literature for other phosphorus based extractants. A comparison was made with the data reported for sodium extraction in phosphorous, phosphonic and phosphinic acid based extractants. The data indicated that similar behaviour can be expected for all these compounds. © 1990, Taylor & Francis Group, LLC. All rights reserved.
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页码：573 / 595
页数：23
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