A heterogeneous catalyst (FeSi/Ag/VO) based on silver and vanadyl as active sites and mesoporous silica-coated nanospheres of magnetite (Fe 3 O 4 @m-SiO 2 ) as support was successfully prepared by deposition of Ag nanoparticles and the covalent grafting of vanadyl(IV) acetylacetonate on Fe 3 O 4 @m-SiO 2 . The catalyst exhibited excellent activity for the oxidation of alkanes, benzene and alkylaromatics using green oxidant H 2 O 2 and oxalic acid in acetonitrile at 60°C.
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