Yttrium Oxide of High Purity. DTPA-Ion Exchange Process

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Industrial and Engineering Chemistry, Process Design and Development

DOI:https://doi.org/10.1021/i260001a011· OSTI ID:4812913

Asher, D. R.; Hansen, R. D.; Seamster, A. H.; Small, Hamish; Wheaton, R. M.

The commercial isolation of yttrium compounds from a mixed rare earth oxide source material is possible by an ion exchange chromatographic process using buffered diethylenetrinitrilopentaacetic acid (DTPA) as eluant. DTPA offers particular advantage over other complexing agents specifically for yttrium isolation because of the relative affinities of this chelating agent for yttrium and other rare earths. Further, the moderate water solubility of DTPA acid permits the use of acid from ion exchange resins rather than metal (copper) retaining ion and minimizes precipitation and recovery problems. Rare earth separations are improved with lower crosslinked, finer mesh cation exchange resins and at elevated temperatures.

• Research Organization: Dow Chemical Co., Midland, Mich.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-006512
• OSTI ID: 4812913
• Journal Information: Industrial and Engineering Chemistry, Process Design and Development, Journal Name: Industrial and Engineering Chemistry, Process Design and Development Journal Issue: 1 Vol. 1; ISSN 0196-4305
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ACETIC ACID
ACIDITY
ACIDS
AMINES
BUFFERS
CATIONS
CHELATES
CHROMATOGRAPHY
COMPLEXES
COPPER
DISTRIBUTION
DTPA
ETHYLENE
HIGH TEMPERATURE
IMPURITIES
ION EXCHANGE
ION EXCHANGE MATERIALS
IONS
LEACHING
METALS
MIXING
PRECIPITATION
RARE EARTHS
RECOVERY
SEPARATION PROCESSES
SOLUBILITY
WATER
YTTRIUM OXIDES