Selective oxoanion separation using a tripodal ligand
Patent
·
OSTI ID:1240417
The present invention relates to urea-functionalized crystalline capsules self-assembled by sodium or potassium cation coordination and by hydrogen-bonding water bridges to selectively encapsulate tetrahedral divalent oxoanions from highly competitive aqueous alkaline solutions and methods using this system for selective anion separations from industrial solutions. The method involves competitive crystallizations using a tripodal tris(urea) functionalized ligand and, in particular, provides a viable approach to sulfate separation from nuclear wastes.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- Assignee:
- UT-BATTELLE, LLC (Oak Ridge, TN)
- Patent Number(s):
- 9,260,326
- Application Number:
- 13/485,118
- OSTI ID:
- 1240417
- Resource Relation:
- Patent File Date: 2012 May 31
- Country of Publication:
- United States
- Language:
- English
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