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二烷基单硫代膦酸萃淋树脂吸附重稀土(Ⅲ)的研究

By 袁猛, 孟淑兰, 李德谦 and 邵传林

Abstract

本文研究了Cyanex302萃淋树脂从硝酸介质中吸附重稀土(Ⅲ),吸附能力为Lu>Yb>Tm>Er>Ho>Dy>Tb>Gd。考察了平衡水相酸度、稀土浓度、温度等对吸附平衡的影响。计算了重稀土(Ⅲ)间的平均分离系数β~z+1_z=3.55,表明分离稀土(Ⅲ)的选择性优于HDEHP、HEH/EHP萃淋树脂,有可能用于制备高纯单一重稀土。Cyanex302萃淋树脂饱和吸附稀土(Ⅲ)的红外光谱表明,P=S键参与了配位

Topics: 二烷基单硫代膦酸, 萃淋树脂, 稀土, 吸附平衡
Year: 1996
OAI identifier: oai:ir.ciac.jl.cn:322003/25709
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