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

✍ Scribed by Quyen Thi Hanh Le; Shigeo Umetani; Hideki Takahara; Masakazu Matsui

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 599 KB
• Volume: 272
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)80582-6

✦ Synopsis

A highly acldlc P-dlketone, 3-phenyl4benzoyl-%soxazolone (HPBI), was synthesized and the acid dlssoclatlon constant and the partltlon constant between an orgamc solvent and 0 1 M sodium perchlorate solution were determmed by a hqmd-hqmd dlstrlbutlon method The extraction of lanthamdes urlth HPBI was mvestlgated m the presence and absence of tn-n-octylphosphme oxide HPBI was found to be a very powerful extractant for lanthamdes owmg to its strong acldlty The acldlty and extractablhty are discussed on the basis of the molecular structure optlmlzed by a semi-empmcal MNDO/H calculation Keywords Extractlon, Lanthamdes