Extraction and separation between light and heavy lanthanides by -tetraoctyl-diglycolamide from organic acid

Sasaki, Yuji ; Matsumiya, Masahiko*; Nakase, Masahiko*; Takeshita, Kenji*

Lanthanide (Ln) extractions from organic acids to -dodecane by -tetraoctyl-diglycolamide (TODGA) were conducted. Four organic acids (lactic acid, malonic acid, tartaric acid, and citric acid) were employed. Although these acids stabilize lanthanides in the aqueous phase, a distribution ratio () greater 1 was obtained for heavy Ln. Ln patterns ((Ln) against atomic number of Ln) show maximum values of Ho and Er. In order to obtain high values, the addition of HNO $_{3}$ in aqueous phase is found to be effective.

Language	:	English
Journal	:	Chemistry Letters
Volume	:	49
Number	:	10
Pages	:	p.1216 - 1219
Publication Year/Month	:	2020/10
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Paper URL	:	https://doi.org/10.1246/cl.200431
DOI for research data	:
Keywords	:	有機酸; 希土類元素; 抽出; TODGA
Research Facility	:	第4研究棟
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	横浜国立大学; 東京工業大学

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Registration No. : AA20200143
JAEA Abstracts No. : 50000236
Paper Submission No. : 25022

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