摘要
研究了二－（２－乙基己基）磷酸（ＨＡ）－甲苯从氯化物介质中萃取镓（Ⅲ）的平衡．发现体系中同时存在两种萃取平衡，生成ＧａＣｌＡ２２ＨＡ和ＧａＡ３３ＨＡ两种萃合物．求得了不同温度下两平行反应的平衡常数，测得了各反应的热焓；同时实验证明二－（２－乙基己基）亚砜（ＤＥＨＳＯ）、磷酸三丁酯（ＴＢＰ）、三苯基氧膦（ＴＰＰＯ）对ＨＤＥＨＰ萃取镓（Ⅲ）无明显的协同作用．
The extraction equilibria of Gallium(Ⅲ) from hydrochloric acid solutions had been investigated with bis(2ethylhexyl)phospate acid(HDEHP) in toluene.The compositions of the extracted species are found to be GaClA2·2HA and GaA3·3HA.The values of Kex and △H0 at 298K calculated.Furthermore,the studies indicates that DEHSO,TBP and TPPO on the extraction of Gallium(Ⅲ) with HDEHP exhibits little synergistic action respectively.
出处
《山东大学学报（自然科学版）》
CSCD
1997年第3期317-321,共5页
Journal of Shandong University(Natural Science Edition)
关键词
镓
萃取平衡
HDEHP
HDEHP
gallium(Ⅱ)
extraction equilibria
