摘要
采用两相滴定法研究α－噻吩甲酰三氟丙酮（ＨＴＴＡ）和三苯基氧膦（ＴＰｈＰＯ）对九种三价稀土离子（Ｌａ，Ｃｅ，Ｅｕ，Ｔｂ，Ｄｙ，Ｈｏ，Ｅｒ，Ｙｂ，Ｙ）的协同萃取机理。在１５℃、２０℃、２５℃、３５℃四个温度下，测定了各协萃配合物的分子组成及稳定常数，进而算出协萃反应的热力学函数，并与类似的协萃体系作了比较。
The synergistic extraction mechnaism of nine RE(Ⅲ) ions (La,Ce,Eu,Tb,Dy,Ho,Er,Yb,Y) with HTTA-TPhPO has been studied by using the two-phase titration method.The compositions and stability constants of synergistic complexes were determined at 15℃,20℃,25℃,35℃ respectively.The thermodynamical functions of extractive reaction were obtained,which were compared with similar synergistic systems.
出处
《稀土》
EI
CAS
CSCD
北大核心
1999年第1期11-14,23,共5页
Chinese Rare Earths
基金
内蒙古自然科学基金
