Mixed-ligand chelate extraction of lanthanides with 1-phenyl-3-methyl-4-(trifluoroacetyl)-5-pyrazolone and some phosphine oxide compounds
Mixed-ligand chelate extraction of lanthanides (Ln) such as La, Pr, Eu, Ho, and Yb into chloroform with 1-phenyl-3-methyl-4-(trifluoroacetyl)-5-pyrazolone (HPMTFP) and with one of three phosphine oxide compounds is studied. The phosphine oxide compounds employed in the present work are tri-n-octylphosphine oxide (TOPO), n-octylphenyl(N,N-diisobutylcarbamoylmethyl)phosphine oxide (CMPO), and methylenebis(diphenylphosphine oxide) (MBDPO). Lanthanide ions are found to be extracted from a 0.1 M sodium perchlorate medium as Ln(PMTFP)/sub 3/(TOPO)/sub 2/ and Ln(PMTFP)/sub 3/(CMPO), respectively. In the extraction of lanthanides with the mixture of HPMTFP and MBDPO, the extracted species are found to be Ln(PMTFP)/sub 3/(MBDPO) or Ln(PMTFP)/sub 2/(ClO/sub 4/)(MBDPO)/sub 2/ in the absence or presence of sodium perchlorate, respectively. The extraction constants of these systems do not increase monotonically with atomic number but have a maximum at Eu or Ho. 11 references, 4 tables.
- Research Organization:
- Univ. of Arizona, Tucson
- OSTI ID:
- 5678809
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 26:19; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400105* -- Separation Procedures
AZOLES
DATA
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION
HETEROCYCLIC COMPOUNDS
INFORMATION
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHINE OXIDES
PHOSPHINES
PHOSPHORUS COMPOUNDS
PYRAZOLES
PYRAZOLINES
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SYNERGISM