PREPARATION OF NIOBIUM OXIDE (in French)
Patent
·
OSTI ID:4029131
Nb is separated from metals of the 3rd, 4th, 5th, and 8th groups, such as Fe, Ta, Mn, Ti, Si, Cu, Al, and Sn, by passing a solution of metal chlorides or fluorides through an anion exchange resin, which retains only Nb and part of the Fe. Fe and Nb are separated by selective elution with NaCl, which also regenerates the ion exchanger, a quaternary ammonium salt. Niobium hydroxids is precipitated with ammonia, washed, dried, and calcined to high-purity Nb/sub 2/O/ sub 5/. (EURATOM)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-15-015990
- OSTI ID:
- 4029131
- Report Number(s):
- BE 580485
- Country of Publication:
- Belgium
- Language:
- French
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Related Subjects
ALUMINUM
AMMONIA
AMMONIUM COMPOUNDS
CALCINATION
CHLORIDES
COPPER
ELUTION
FLUORIDES
ION EXCHANGE
IRON
MANGANESE
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM
NIOBIUM HYDROXIDES
NIOBIUM OXIDES
PRECIPITATION
PREPARATION
RESINS
SEPARATION PROCESSES
SILICON
SODIUM CHLORIDES
SOLUTIONS
SOLVENT EXTRACTION
TANTALUM
TIN
TITANIUM
AMMONIA
AMMONIUM COMPOUNDS
CALCINATION
CHLORIDES
COPPER
ELUTION
FLUORIDES
ION EXCHANGE
IRON
MANGANESE
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM
NIOBIUM HYDROXIDES
NIOBIUM OXIDES
PRECIPITATION
PREPARATION
RESINS
SEPARATION PROCESSES
SILICON
SODIUM CHLORIDES
SOLUTIONS
SOLVENT EXTRACTION
TANTALUM
TIN
TITANIUM