Separation of cerium(III) from lanthanum(III), neodymium(III) and praseodymium(III) by oxidation and liquid-liquid extraction using ionic liquids

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• 作者：Matthieu Gras^a ; Nicolas Papaiconomou^a ; ^b ; ^c ; ^{nicolas.papaiconomou@lepmi.grenoble-inp.fr} ; Eric Chainet^a ; ^b ; Farouk Tedjar^d ; Isabelle Billard^a ; ^b
• 关键词：Cerium oxidation ; Liquid-liquid extraction ; Lanthanide separation ; Ionic liquid ; Inductively coupled plasma
• 刊名：Separation and Purification Technology
• 出版年：2017
• 出版时间：7 May 2017
• 年：2017
• 卷：178
• 期：Complete
• 页码：169-177
• 全文大小：1069 K
• 卷排序：178

文摘

NaOH induces Ce(III) oxidation into Ce(OH)4 while other Ln remain as Ln(OH)3. Cerium(IV) was separated from lanthanides(III) using two different ionic liquids. Back extraction of cerium(IV) in an aqueous phase was performed efficiently. The recycling of the most efficient ionic liquid was examined.