Behavior of 2-ethylhexanoic Acid in Organic Phase of Gallium Extraction
来源期刊：Rare Metals1993年第3期
论文作者：吴秋芳 王承明
文章页码：181 - 186
摘 要：<正> The rate of batch extraction of gallium from alkaline aqueous solution was studied by adding2-ethylhexanoic acid in organic phase containing 7-substituted-8-hydroxyquinoline（extractant N601）,n-decanol and kerosene.The extraction of Ga can be considered as a pseudo-homogeneous first-order reac-tion.The neutralization and distribution of organic acid between phases during the extraction were studied.The effect of 2-ethylhexanoic acid on the protonation of N601 is insignificant.The extraction of HCl duringthe stripping of gallium is mainly dependent on the concentration of aqueous hydrochloric acid and the con-tent of N601.Under the given conditions of temperature and N601 content,the acidity of organic phase isa linear function of the concentration of carboxylic acid in organic phase and the concentration ofhydrochloric acid in equilibrium aqueous phase,if the latter is 1.9～5.6 mol/L.
吴秋芳，王承明
摘 要：<正> The rate of batch extraction of gallium from alkaline aqueous solution was studied by adding2-ethylhexanoic acid in organic phase containing 7-substituted-8-hydroxyquinoline（extractant N601）,n-decanol and kerosene.The extraction of Ga can be considered as a pseudo-homogeneous first-order reac-tion.The neutralization and distribution of organic acid between phases during the extraction were studied.The effect of 2-ethylhexanoic acid on the protonation of N601 is insignificant.The extraction of HCl duringthe stripping of gallium is mainly dependent on the concentration of aqueous hydrochloric acid and the con-tent of N601.Under the given conditions of temperature and N601 content,the acidity of organic phase isa linear function of the concentration of carboxylic acid in organic phase and the concentration ofhydrochloric acid in equilibrium aqueous phase,if the latter is 1.9～5.6 mol/L.
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