SYNERGISTIC EXTRACTION OF EUROPIUM WITH DIDODECYLMONOTHIOPHOSPHORIC ACID AND 1,10-PHENANTHROLINE

被引：3
|
作者：
KONDO, K [1 ]
NAKASHIO, F [1 ]
OHTSUBO, H [1 ]
机构：
[1] KYUSHU UNIV,DEPT ORGAN SYNTH,HIGASHI KU,FUKUOKA 812,JAPAN
来源：
SOLVENT EXTRACTION AND ION EXCHANGE | 1992年 / 10卷 / 04期
关键词：
D O I：
10.1080/07366299208918127
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Extraction equilibrium of europium from acetate media with didodecylmonothiophosphoric acid (HR) and 1,10-phenanthroline (PHEN) in toluene diluent was measured at 303K. The equilibrium equation of this synergistic extraction system was found to be written as follows. Eu3+ aq + 3 HR(org) + PHEN(org) half arrow right over half arrow left EuR3.PHEN(org) + 3 H+ aq The extraction equilibrium constant, K(ex, syn) = (2.0 +/- 0.3) x 10(2) m3/mol was obtained according to this equation.
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页码：655 / 662
页数：8
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