摘要
采用溶剂萃取的方法,研究了Cyanex272(实验浓度为0.1023 mol.L-1)在不同振荡时间、不同pH值和不同萃取温度对Zn(Ⅱ)和Ce(Ⅳ)的萃取效果的影响。结果表明,振荡时间对萃取效果影响最大,水相的pH值次之,萃取温度影响最小。同时,确定了两种离子分离的最佳条件。两离子的分离系数较大,可以采取多级连续萃取法达到两者分离的目的。为Cyanex272应用于分离提纯轻稀土离子Ce(Ⅳ)提供了依据。
The influences of oscillation time,pH value of equilibrium aqueous phase,and extraction temperature on solvent extraction effect of Zn（Ⅱ）-Ce（Ⅳ） with Cyanex272（experimental concentration of 0.1023 mol·L-1） were studied.The experimental results show that the biggest influence factor on extraction results is ostillation time,the second factor is the pH value of equilibrium aqueous phase and the third extraction temperature.The optimal conditions of separating Zn（Ⅱ）-Ce（Ⅳ） were also investigated.The separation coefficients of the two ions are big enough to separate them by mutable and continuous extraction.This offer basis for separation and purification of light rareearth ion of Ce（Ⅳ） with Cyanex272.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2008年第1期121-124,共4页
Chinese Journal of Rare Metals
基金
惠州学院校立项目(C206.0203)
