Abstract

A new extractant, {[2-(2-diphenylphosphoryl)-4-ethylphenoxy]ethyl}diphenylphosphine oxide, has been synthesized, and its solutions in 1,2-dichloroethane and a ionic liquid, 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, have been used to extract HNO₃, uranium(VI), thorium(IV), and trivalent rare earths from nitric acid solutions. The stoichiometry of the extracted complexes has been determined, and the effects of the extractant structure and HNO₃ concentration in the aqueous phase on the extraction efficiency have been studied. The extraction efficiency has been found to significantly increase when ionic liquid is present in the organic phase.

中文翻译：

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用{[2-（2-二苯基磷酰基）-4-乙基苯氧基]乙基}二苯基膦氧化物从硝酸溶液中萃取铀（VI），Thor（IV）和三价稀土

摘要

合成了一种新的萃取剂{[2-（2-二苯基磷酰基）-4-乙基苯氧基]乙基}二苯基膦氧化物，并将其溶于1,2-二氯乙烷和离子液体1-丁基-3-甲基咪唑双（三氟甲磺酰基）酰亚胺已被用于从硝酸溶液中萃取HNO ₃，铀（VI），th（IV）和三价稀土。确定了萃取物的化学计量，并研究了萃取剂结构和水相中HNO ₃浓度对萃取效率的影响。已经发现，当有机相中存在离子液体时，萃取效率会大大提高。