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首页> 外文期刊>Journal of Chemical Engineering of Japan >Synergistic Extraction of Rare-Earth Metals and Separation of Scandium Using 2-Thenoyltrifluoroacetone and Tri-n-octylphosphine Oxide in an Ionic Liquid System
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Synergistic Extraction of Rare-Earth Metals and Separation of Scandium Using 2-Thenoyltrifluoroacetone and Tri-n-octylphosphine Oxide in an Ionic Liquid System

机译:离子液体系统中2-壬基三氟丙酮和三正辛基膦氧化物的协同萃取-稀土金属分离and

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References(15) Cited-By(5) The synergistic extraction of rare-earth metals by a β-diketone and an organophosphine oxide is described. A combination of 2-thenoyltrifluoroacetone (HTTA) and tri-n-octyl phosphine oxide (TOPO) was found to be effective in synergistically extracting rare-earth metals into an ionic liquid (IL). The synergistic effect was strongly influenced by the diluent in which the extractants were dissolved. Extraction efficiencies for all the rare-earth metal ions were enhanced by synergy when a conventional organic solvent was used (n-dodecane). However, the synergistic effect in the IL preferentially improved the scandium extraction, leading to higher selectivity for Sc than for other rare-earth metals. Slope analysis was used to assess each extraction system, and the IL itself was found to be directly involved in the complex formation of the metal extraction system.
机译:参考文献(15)Cyd-By(5)描述了通过β-二酮和有机膦氧化物协同萃取稀土金属。发现2-壬基三氟丙酮(HTTA)和三正辛基氧化膦(TOPO)的组合可有效地协同萃取稀土金属到离子液体(IL)中。萃取剂溶解于其中的稀释剂对协同效果产生了很大的影响。当使用常规有机溶剂(正十二烷)时,通过协同作用提高了所有稀土金属离子的萃取效率。但是,IL中的协同作用优先改善了extraction的提取,与其他稀土金属相比,对Sc的选择性更高。使用斜率分析来评估每个萃取系统,并且发现IL本身直接参与了金属萃取系统的复杂形成。

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