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Title: Bifunctional anion-exchange resins with improved selectivity and exchange kinetics

Abstract

Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent technetium (as pertechnetate anion, TcO.sub.4.sup.-). The resins are prepared by first reacting haloalkylated crosslinked copolymer beads with a large tertiary amine in a solvent in which the resin beads can swell, followed by reaction with a second, smaller, tertiary amine to more fully complete the functionalization of the resin. The resins have enhanced selectivity, capacity, and exchange kinetics.

Inventors:
 [1];  [1];  [1];  [2]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENERGY RES COR
OSTI Identifier:
872989
Patent Number(s):
US 6059975
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
bifunctional; anion-exchange; resins; improved; selectivity; exchange; kinetics; disclosed; anion; containing; sites; sorptive; capability; chemical; species; solution; heptavalent; technetium; pertechnetate; tco; prepared; reacting; haloalkylated; crosslinked; copolymer; beads; tertiary; amine; solvent; resin; swell; followed; reaction; complete; functionalization; enhanced; capacity; polymer beads; resin beads; anion exchange; exchange resin; chemical species; exchange resins; chemical specie; ion-exchange resin; improved selectivity; tertiary amine; exchange sites; /210/521/525/

Citation Formats

Alexandratos, Spiro D., Brown, Gilbert M., Bonnesen, Peter V., and Moyer, Bruce A. Bifunctional anion-exchange resins with improved selectivity and exchange kinetics. United States: N. p., 2000. Web.
Alexandratos, Spiro D., Brown, Gilbert M., Bonnesen, Peter V., & Moyer, Bruce A. Bifunctional anion-exchange resins with improved selectivity and exchange kinetics. United States.
Alexandratos, Spiro D., Brown, Gilbert M., Bonnesen, Peter V., and Moyer, Bruce A. Sat . "Bifunctional anion-exchange resins with improved selectivity and exchange kinetics". United States. https://www.osti.gov/servlets/purl/872989.
@article{osti_872989,
title = {Bifunctional anion-exchange resins with improved selectivity and exchange kinetics},
author = {Alexandratos, Spiro D. and Brown, Gilbert M. and Bonnesen, Peter V. and Moyer, Bruce A.},
abstractNote = {Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent technetium (as pertechnetate anion, TcO.sub.4.sup.-). The resins are prepared by first reacting haloalkylated crosslinked copolymer beads with a large tertiary amine in a solvent in which the resin beads can swell, followed by reaction with a second, smaller, tertiary amine to more fully complete the functionalization of the resin. The resins have enhanced selectivity, capacity, and exchange kinetics.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

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