MoO2(acac)2@Fe3O4/SiO2/HPG/COSH nanostructures: novel synthesis, characterization and catalyst activity for oxidation of olefins and sulfides

In this study, synthesis of a molybdenum (Mo) based catalyst immobilized on modified magnetic nanoparticles with hyperbranched polyglycerol is reported. Structure and morphology of the as prepared catalyst were characterized by Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), transmission electron microscopy, scanning electron microscopy, inductively coupled plasma, CHNS and TGA analyses. Catalytic activities of the as synthesized nanocatalyst were investigated in the epoxidation of alkenes and oxidation of sulfides with tert -butyl hydroperoxide. This catalytic system exhibits excellent yields, easy separation and great reusability without significant loss of its catalytic activity.