Solvent Extraction of Metals by Organophosphorus Compounds

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Nippon Genshiryoku Gakkai-Shi

DOI:https://doi.org/10.3327/jaesj.4.8· OSTI ID:4807275

OSHIMA, Keichi

A systematic study of the basic chemistry of solvent extraction of metals by organophosphorus compounds is reported. Thermodynamic and structural chemical approaches were employed. The thermodynamical treatment of the distribution equilibrium measurement was carried out rather precisely to analyze the mechanism of solvent extraction. This was applied to determine the compositions of the complexes formed and the chemical reactions underlying. Further, it was shown the competition of metal and proton acid could clearly explain the extraction behaviors in these systems. Spectroscopic measurements of the solvents were conducted. Especially, in the infra-red region, the shift of the P = O vibrational spectra of the solvent and the splitting of the NO₃ vibrational spectra of the nitrate ions gave very powerful measures to study the microscopic mechanism of complex formation between the solvent and the species extracted. The thermodynamic and structural chemical approaches turned out to be in good accord and complementary.

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-011795
• OSTI ID: 4807275
• Journal Information: Nippon Genshiryoku Gakkai-Shi, Journal Name: Nippon Genshiryoku Gakkai-Shi Journal Issue: 1 Vol. 4; ISSN 0004-7120
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACIDS
CHEMICAL REACTIONS
COMPLEXES
DISTRIBUTION
ENERGY LEVELS
INFRARED RADIATION
IONS
MEASURED VALUES
METALS
NITRATES
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OSCILLATIONS
PHOSPHORUS COMPOUNDS
QUALITATIVE ANALYSIS
REACTION KINETICS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
SPECTRA
SPECTRAL SHIFT
SPECTROSCOPY
TESTING
THERMODYNAMICS
VIBRATIONAL STATE