Lanthanoid ions solvent extraction with 4-benzoyl-3-phenyl-5-isoxazolone: Synergistic effects in the presence of long chain alkylammonium salts

Improvement of separation efficiency of Cu(II) and Ni(II) in ammoniacal solutions by antagonistic effect of Aliquat336 on LIX84I

“…Coll et al found an improvement in the extraction and separation of Co(II) and Ni(II) from neutral chloride solutions with a mixture of Primene JMT and Cyanex 272 [25]. Synergistic extraction and separation of lanthanide ions with mixtures of a chelating extractant 4-benzoyl-3-phenyl-5-isoxazolone and tridodecylammonium perchlorate or methyldioctylammonium perchlorate in benzene have been reported by Dukov and Atanassova [28]. It is noteworthy that the antagonistic effects can be observed under different ratios between basic extractant and acidic extractant because of their strong intermolecular interactions.…”

“…Moreover, copper and nickel in chloride solutions can be effectively separated and transferred into sulfate media for electrowinning by synergistic extraction system of LIX63 and Versatic 10 [17]. Recently, the mixed extractants consisting of an acidic extractant and a basic extractant, named as acid-base coupling extractant, have been received much attention for separation of metal ions [25][26][27][28][29]. Coll et al found an improvement in the extraction and separation of Co(II) and Ni(II) from neutral chloride solutions with a mixture of Primene JMT and Cyanex 272 [25].…”

Extraction Ability of 4-Benzoyl-3-phenyl-5-isoxazolone towards 4f-Ions into Ionic and Molecular Media

“…Atanassova et al have already demonstrated that the extraction of Ln ions using the strongly coordinating compound HPBI in a set of molecular diluents proceeds through a proton-exchange reaction, forming neutral tris complexes. [23][24][25][26][27] The extraction mechanism and the extraction constant of the neutral tris complexes (Kex,3) were represented by the following equations:…”

“…(11) from slope analysis (data not shown in the figures). [23][24][25][26][27] In addition, the values of log Kex,3 for La 3+ , Eu 3+ , and Lu 3+ in the chloroform system were determined to be -1.34 ± 0.10, 0.85 ± 0.11, and 0.73 ± 0.10 by a linear leastsquares fitting of the plots, respectively. Electroneutrality is an essential principle, as only neutral complexes may enter the hydrophobic molecular layer.…”

“…1,2-dichloroethane), including combinations with a wide variety of ligands, like crown ethers, 23 p-tert-butylcalix [4]arenes, 24,25 alkylammonium salts 26 including Aliquat 336 in its perchlorate form too. 27 Strong acidity due to the electron delocalization induced by the isoxazolone moiety makes 4-acyl-5-isoxazolones an interesting class of analogs to β-diketones with potential application at strong acidic media for developing a separation process for both lanthanoids and actinoids.…”