SYNERGISTIC EXTRACTION OF COPPER (II) AND OTHER DIVALENT METALS WITH 3-PHENYL-4-ACYLISOXAZOL-5-ONES AND 1-PHENYL-3-METHYL-4-ACYLPYRAZOL-5-ONES IN THE PRESENCE OF TRI-n-OCTYLPHOSPHINE OXIDE IN TOLUENE

SYNERGISTIC EXTRACTION OF COPPER (II) AND OTHER DIVALENT METALS WITH 3-PHENYL-4-ACYLISOXAZOL-5-ONES AND 1-PHENYL-3-METHYL-4-ACYLPYRAZOL-5-ONES IN THE PRESENCE OF TRI-n-OCTYLPHOSPHINE OXIDE IN TOLUENE

The synergistic extraction of copper (II) from 1M NaN03 aqueous solutions with acidic chelating extractants HL = 3-phenyl-4-acylisoxazol-5-ones (acyl = benzoyl, "HPBI", and p-tert-butylbenzoyl, "HPtbBI") and 1-phenyl-3-methyl-4-acylpyrazol-5-ones (acyl = benzoyl, "HPMBP"...

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Bibliographic Details
Published in:Solvent extraction and ion exchange 1996-11, Vol.14 (6), p.1037-1056
Main Authors: Torkestani, K., Blinova, O., Arichi, J., Goetz-Grandmont, G. J., Brunette, J.P.
Format: Article
Language:eng
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Summary:The synergistic extraction of copper (II) from 1M NaN03 aqueous solutions with acidic chelating extractants HL = 3-phenyl-4-acylisoxazol-5-ones (acyl = benzoyl, "HPBI", and p-tert-butylbenzoyl, "HPtbBI") and 1-phenyl-3-methyl-4-acylpyrazol-5-ones (acyl = benzoyl, "HPMBP", p-tert-butylbenzoyl, "HPMtbBP" and stearoyl, "HPMSP"), in the absence and presence of trx-n-octylphosphine oxide (TOPO) in toluene at 25°0, has been studied. The TOPO-HL interaction, which is one order of magnitude stronger with 4-acylisoxazol-5-ones than with 4-acylpyrazol-5-ones, strongly influences the synergistic extraction efficiency. The extracted species are CuL 2 and CuL 2 (T0P0). Because of their higher acidity, the extractions performed with 4-acylisoxazol-5-ones occur at a lower pH range than with 4-acylpyrazol-5-ones.
ISSN:0736-6299
1532-2262