Selective oxoanion separation using a tripodal ligand

Custelcean, Radu; Moyer, Bruce A.; Rajbanshi, Arbin

Selective oxoanion separation using a tripodal ligand

Patent · Tue Feb 16 04:00:00 EST 2016

OSTI ID:1240417

Custelcean, Radu; Moyer, Bruce A.; Rajbanshi, Arbin

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.

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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

Country of Publication:: United States

Language:: English

References (31)

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08 HYDROGEN
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Selective oxoanion separation using a tripodal ligand

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