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Bifunctional phenyl monophosphonic/sulfonic acid ion exchange resin and process for using the same

United States Patent

May 15, 2001
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
A cross-linked water-insoluble ion exchange resin comprised of polymerized monomers having a phenyl ring is disclosed. A contemplated resin contains (i) polymerized phenyl ring-containing monomers having a phosphonic acid ligand linked to the phenyl ring, (ii) about 2 to about 5 millimoles per gram (mmol/g) of phosphorus as phosphonic acid ligands, and (iii) a sufficient amount of a sulfonic acid ligand such that the ratio of mmol/g of phosphonic acid to mmol/g sulfonic acid is up to 3:1. A process for removing polyvalent metal cations from aqueous solution, and a process for removing iron(III) cations from acidic copper(II) cation-containing solutions that utilize the contemplated resin or other resins are disclosed.
Alexandratos; Spiro (Knoxville, TN), Shelley; Christopher A. (Knoxville, TN), Horwitz; E. Philip (Naperville, IL), Chiarizia; Renato (Elmhurst, IL)
Arch Development Corporation (Chicago, IL)
09/ 221,446
December 28, 1998
GOVERNMENT LICENSE RIGHTS The U.S. Government has rights in this invention pursuant to Contract No. W-31-109-ENG-38 awarded by the U.S. Department of Energy.