STUDIES ON THE EXTRACTION OF ZIRCONIUM WITH ORGANOPHOSPHORUS COMPOUNDS

Journal Article · Sun Oct 01 04:00:00 EDT 1961 · Analytica Chimica Acta (Netherlands)

DOI:https://doi.org/10.1016/S0003-2670(01)81577-4· OSTI ID:4834073

Umezawa, H; Hara, R

The extraction of zirconium from nitric acid media with alkyl phosphates, phosphonate, phosphinate, and phosphine oxide was studied. The extraction ability is affected by alkyl substituents attached to the phosphoryl group as well as by the solvent structure, the order of efficiency being: tri-n- butyl phosphinate > tri-n-butyl phosphine oxide > tricyclohexyl phosphate snd tri- sec-butyl phosphate > diethyl butyl phosphate > normal alkyl phosphates. In the extraction with normal alkyl phosphates, two solvent molecules and four nitrate ions combine with one atom of zirconium. The equilibrium constant and the effect of temperature were studied in the extraction with tri-n-butyl phosphate. The infrared spectra of zirconium extracted from 10 M nitric acid solution with the organophosphorus solvents were measured; it was confirmed that a covalent complex was formed. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-000140
• OSTI ID: 4834073
• Journal Information: Analytica Chimica Acta (Netherlands), Journal Name: Analytica Chimica Acta (Netherlands) Vol. Vol: 25; ISSN ACACA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKYL RADICALS
ATOMS
BUTYL PHOSPHATES
BUTYL RADICALS
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
INFRARED RADIATION
IONS
MEASURED VALUES
MOLECULES
NITRATES
NITRIC ACID
ORGANOMETALLICS
OXIDES
PHOSPHATES
PHOSPHINES
PHOSPHORUS COMPOUNDS
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
SPECTRA
TEMPERATURE
ZIRCONIUM COMPOUNDS