A novel heteropolyanion-based amino-containing cross-linked ionic copolymer catalyst for epoxidation of alkenes with H2O2

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, 1H NMR, and elemental analysis. Its catalytic activity was evaluated in the epoxidation of alkenes with aqueous H2O2. The resultant heteropolyanion-based ionic copolymer is revealed to be a highly efficient heterogeneous catalyst for epoxidation of alkenes with H2O2, adding the advantages of convenient recovery and steady reuse.

Figure optionsDownload high-quality image (177 K)Download as PowerPoint slideHighlights
► A new heteropolyanion-based amino-containing cross-linked polymeric hybrid is prepared.
► The hybrid catalyst leads to the heterogeneous epoxidation of alkenes with H2O2.
► The hybrid catalyst gives high conversion and selectivity.
► The catalyst shows easy recovery, and very steady reuse.