Fe-Co sulfonated polystyrene as an efficient and selective catalyst in heterogeneous Baeyer-Villiger oxidation reaction of cyclic ketones

Abstract EN

A highly efficient catalyst Fe–Co / sulfonated polystyrene (Fe–Co / SPS) was introduced and synthesized, which catalyzed BV oxidation of ketones with aqueous hydrogen peroxide to give the corresponding lactones in high yield and selectivity.

Solid acid catalyst of Fe–Co / SPS has been prepared by using the 98-wt % sulfuric acid as the sulfonating agent and CoCl2 combined FeCl3 as sources of metal ions.

Various physical–chemical characterizations including FT-IR, XRD, SEM and TGA, revealed that bimetallic ions Fe3+–Co2+ species in the sulfonated polystyrene framework were responsible for the catalytic activities.

The BV reaction catalyzed by Fe–Co / SPS highlighted the special effects between metal ions and protonic acids as well as solvent-free heterogeneous catalytic oxidation with excellent conversion.