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首页> 外文期刊>Separation and Purification Technology >Reversed micellar solubilization extraction and separation of thorium(IV) from rare earth(III) by primary amine N1923 in ionic liquid
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Reversed micellar solubilization extraction and separation of thorium(IV) from rare earth(III) by primary amine N1923 in ionic liquid

机译：离子液体中伯胺N1923的逆胶束增溶萃取和从稀土（III）中分离（（IV）

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摘要

The extraction behavior of thorium(IV) sulfate by primary amine N1923 in imidazolium-based ionic liquid (IL) namely1-octyl-3-methylimidazoliumhexafluorophosphate([C8mim]PF6) was systematically studied in this paper. Results showed that the extraction behavior was quite different from that using conventional solvent as diluent. A reversed micellar solubilization extraction mechanism was proposed for the extraction of thorium(IV) by N1923/[C8mim]PF6 via slope analysis method and polarized optical microscopy (POM)/transmission electron microscopy (TEM) observation. The salt-out agent, Na2SO4, was demonstrated to prompt this extraction mechanism. The extraction of several rare earths(III) (La, Ce, Nd, Gd, Er) by N1923/[C8mim]PF6 was investigated to evaluate the separation coefficients between Th(IV) and rare earth(III) (RE(III)). On this basis, we made a preliminary assessment for the possibility of using ionic liquid as diluent for the separation of Th(IV) from RE(III) in clean process.
机译：本文系统研究了伯胺N1923在咪唑基离子液体（IL）即1-辛基-3-甲基咪唑六氟磷酸盐（[C8mim] PF6）中对硫酸or（IV）的萃取行为。结果表明，萃取行为与使用常规溶剂作为稀释剂的萃取行为有很大不同。提出了一种反向胶束增溶萃取机理，通过斜率分析法和偏光显微镜（POM）/透射电子显微镜（TEM）观察N1923 / [C8mim] PF6萃取th（IV）。盐析剂Na2SO4被证明促进了这种提取机理。研究了用N1923 / [C8mim] PF6萃取几种稀土（III）（La，Ce，Nd，Gd，Er）的方法，以评估Th（IV）与稀土（III）（RE（III））之间的分离系数）。在此基础上，我们初步评估了在清洁工艺中使用离子液体作为稀释剂从Th（III）中分离Th（IV）的可能性。

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