Synthesis and Characterization of Templated Ion Exchange Resins for the Selective Complexion of Actinide Ions

[摘要] The purpose of this research is to develop polymeric extractants for the selective complexation of uranyl ions (and subsequently other actinyl and actinide ions) from aqueous solutions. Selectivity for a specific actinide ion is obtained by providing the polymers with cavities lined with complexing ligands so arranged as to match the charge, coordination number, coordination geometry, and size of the actinide ion. These cavity-containing polymers are produced by using a specific actinide ion (or surrogate) as a template around which monomeric complexing ligands are polymerized. The polymers provide useful sequestering agents for removing actinide ions from wastes and will form the basis for a variety of analytical techniques for actinide determination.

[发布日期] 2000-06-01 [发布机构] Johns Hopkins University, Laurel, Maryland (United States)

[关键词] Cavities;Actinides;Geometry;37 Inorganic, Organic, Physical And Analytical Chemistry;Wastes