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

被引：46

作者：

LE, QTH ^{[1
]}

UMETANI, S ^{[1
]}

TAKAHARA, H ^{[1
]}

MATSUI, M ^{[1
]}

机构：

[1] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN

来源：

ANALYTICA CHIMICA ACTA | 1993年 / 272卷 / 02期

关键词：

D O I：

10.1016/0003-2670(93)80582-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A highly acidic beta-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.

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页码：293 / 299

页数：7

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