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A heteropolyanion-based cross-linked ionic copolymer was prepared by the anion-exchange of a newly task-specific designed amino-containing ionic copolymer with a Keggin heteropolyacid, and characterized by FT-IR, SEM, TG, XRD, UV–vis, ESR, 1 H NMR, and elemental analysis. Its catalytic activity was evaluated in the epoxidation of alkenes with aqueous H 2 O 2 . The resultant...
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