Liquid-liquid extraction of lanthanides with a highly acidic extractant, 3-phenyl-4-benzoyl-5-isoxazolone, in the presence and absence of tri-n-octylphosphine oxide

Quyen Thi Hanh Le, Shigeo Umetani, Hideki Takahara, Masakazu Matsui

doi:10.1016/0003-2670(93)80582-6

Liquid-liquid extraction of lanthanides with a highly acidic extractant, 3-phenyl-4-benzoyl-5-isoxazolone, in the presence and absence of tri-n-octylphosphine oxide

DOI Web Site Web Site 被引用文献3件

書誌事項

公開日: 1993-02

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/0003-2670(93)80582-6

公開者: Elsevier BV

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説明

A highly acidic β-diketone, 3-phenyl-4-benzoyl-5-isoxazolone (HPBI), was synthesized and the acid dissociation constant and the partition constant between an organic solvent and 0.1 M sodium perchlorate solution were determined by a liquid-liquid distribution method. The extraction of lanthanides with HPBI was investigated in the presence and absence of tri-n-octylphosphine oxide. HPBI was found to be a very powerful extractant for lanthanides owing to its strong acidity. The acidity and extractability are discussed on the basis of the molecular structure optimized by a semi-empirical MNDO/H calculation.