A RAPID ION EXCHANGE METHOD FOR SEPARATING LARGE AMOUNTS OF CERIUM. RARE EARTH ELEMENTS WITH THE APPLICATION OF AMMONIUM NITRILE TRIACETATE AS THE ELUENT
The separation of rare earth elements (REE) of the Ce group is accomplished ln columms 130 centimeters long and 4 centimeters wide, filled with the cationite Vofatite, KPS-200, which has a particle size of 0.2 to 0.4 millimeters. The colunms are first filled with the mentioned cationite in Zn- form and on the layer thus obtained the very same cationite is placed, which previously has adsorbed the mixture to be separated. The eluant is passed at a rate of 0.5 cm/min first through the cationite in the REE-form and then through the cationite in the Zn-form, and the eluate fractions are collected. The eluant is prepared by dissolving 200 grams of diammonium salt of nitrile acetic acid (I) in three liters of water, and adding ammonia until the required pH (7-8) is reached and by diluting the prepared solution with water to ten liters. I is inferior to ethylenediamine tetraacetic acid in respect to the effectiveness of the separation ability, but it can be used in solutions of a greater concentration. From the eluate containing I and REE the latter are precipitated as oxalates, the precipitates are filtered off, calcined to the oxides and are dissolved in 5% HCl for further spectrophotometric investigation.
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-13-022010
- OSTI ID:
- 4233370
- Journal Information:
- Chem. Tech. (Berlin), Journal Name: Chem. Tech. (Berlin) Vol. Vol: 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
ACETATES
ACETIC ACID
ACIDITY
AMMONIA
AMMONIUM COMPOUNDS
CATIONS
CERIUM
CHEMICAL REACTIONS
CHEMICALS
CHEMISTRY
COLOR
COMPOUNDS
CONFIGURATION
EDTA
EXTRACTION COLUMNS
FILTERS
GRAIN SIZE
HYDROCHLORIC ACID
ION EXCHANGE
ION EXCHANGE MATERIALS
LIGHT
LIQUID FLOW
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
OXALATES
OXIDES
PERFORMANCE
PHOTOMETRY
PRECIPITATION
PREPARATION
PYROLYSIS
QUALITATIVE ANALYSIS
QUANTITY RATIO
RARE EARTHS
SEPARATION PROCESSES
SOLUTIONS
SPECTROSCOPY
TRANSLATIONS
VOLUME
WATER