Extraction ability of 4-benzoyl-3-phenyl-5-isoxazolone towards 4f-ions into ionic and molecular media

Atanassova, M.*; Okamura, Hiroyuki ; Eguchi, Ayano ; Ueda, Yuki ; Sugita, Tsuyoshi ; Shimojo, Kojiro

The distribution constants of 4-benzoyl-3-phenyl-5-isoxazolone (HPBI) and deprotonated one (PBI $^{-}$ ) between hydrophobic ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C $_{1}$ C $_{4}$ im][Tf $_{2}$ N]) and aqueous phases were determined, together with the acid-dissociation constant of HPBI. The solvent extraction of three selected lanthanoid ions (La $^{3+}$ , Eu $^{3+}$ , and Lu $^{3+}$ ) with HPBI from aqueous nitrate phase into [C $_{1}$ C $_{4}$ im][Tf $_{2}$ N] has been investigated. Application of the ionic liquid as the extracting phase greatly enhanced the extraction performance of HPBI for lanthanoid ions compared with that in the chloroform system. The composition of the extracted species was established to be anionic tetrakis entities, Ln(PBI) $_{4}$ $^{-}$ , for light, middle, and heavy lanthanoid ions in an ionic environment.

Language	:	English
Journal	:	Analytical Sciences
Volume	:	34
Number	:	8
Pages	:	p.973 - 978
Publication Year/Month	:	2018/08
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Paper URL	:	https://doi.org/10.2116/analsci.18P166
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Keywords	:	no keyword
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Registration No. : AA20180226
JAEA Abstracts No. : 46000727
Paper Submission No. : 20305

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