Equilibrium of boron extraction with 2-butyl-2ethyl-1,3-propanediol in 2-ethylhexanol

被引：0
|
作者：
Kwon, T [1 ]
Kawano, Y
Toorisaka, E
Takanashi, H
Yamagishi, T
Hirata, M
Hano, T
机构：
[1] Oita Univ, Fac Engn, Dept Appl Chem, Oita 8701123, Japan
[2] Kagoshima Univ, Fac Engn, Dept Bioengn, Kagoshima 8900065, Japan
[3] Organo Corp, Tokyo 1130033, Japan
来源：
SOLVENT EXTRACTION RESEARCH AND DEVELOPMENT-JAPAN | 2004年 / 11卷
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Boron extraction equilibrium was investigated by using 2-butyl-2-ethyl-1,3-propane-diol (BEPD) dissolved in 2-ethylhexanol as the organic solvent at various boric acid concentrations, extractant concentrations and pH values. The distribution ratio of boron increased with the initial concentration of BEPD in the organic phase for all boron concentrations examined in this study. At each BEPD concentrations, the distribution ratio of boron was constant with minimal effect of boron concentration. The effect of pH on boron extraction with BEPD in 2-ethhylhexanol was also examined, and the results verified the fact that boron extraction with BEPD in 2-ethylhexanol was effective in acidic and weakly alkaline media (pH < 9), but at pH values above 8 boron was stripped from the organic phase.
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页码：135 / 143
页数：9
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