METHOD OF SEPARATING RARE EARTH METAL IONS
Patent
·
OSTI ID:4833844
A method for separating rare earth metal ions by cation exchange is given. The method comprises sorbing the metal ions on the hydrogen form of a sulfonic acid type cation exchange resin, eluting the metals from the resin with a 0.01 to 0.1 M aqueous solution of an alkali salt of diethylenetriamine pentaacetic acid, and collecting successive fractions of the effluent liquid. The resin preferably should swell appreciably in water and should consist of sulfonated copolymers of 96 to 94% of monovinyl aromatic hydrocarbons and 4 to 6% divinylbenzene. Several examples of the method are given. (D.L.C.)
- Research Organization:
- Dow Chemical Co.
- NSA Number:
- NSA-16-017776
- Assignee:
- DTIE; NSA-16-017776
- Patent Number(s):
- US 3033646
- OSTI ID:
- 4833844
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACETIC ACID
ADSORPTION
ALKALI METALS
AMINES
BENZENE
CATIONS
CHELATES
CHEMISTRY
DTPA
ELUTION
ETHYLENE
EXPANSION
GRAIN SIZE
HYDROCARBONS
ION EXCHANGE
ION EXCHANGE MATERIALS
LIQUIDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
POWDERS
RARE EARTHS
RESINS
SALTS
SEPARATION PROCESSES
SOLUTIONS
SULFONIC ACIDS
VINYL RADICALS
WATER
ADSORPTION
ALKALI METALS
AMINES
BENZENE
CATIONS
CHELATES
CHEMISTRY
DTPA
ELUTION
ETHYLENE
EXPANSION
GRAIN SIZE
HYDROCARBONS
ION EXCHANGE
ION EXCHANGE MATERIALS
LIQUIDS
ORGANIC NITROGEN COMPOUNDS
POLYMERS
POWDERS
RARE EARTHS
RESINS
SALTS
SEPARATION PROCESSES
SOLUTIONS
SULFONIC ACIDS
VINYL RADICALS
WATER