Abstract:
Crosslinked polymer microspheres of glycidyl methacrylate (GMA) and methyl methacrylate (MMA) were first prepared by suspension polymerization, obtaining the polymer microspheres GMA/MMA. Subsequently, N-hydroxyphthalimide (NHPI) was synthesized and immobilized on GMA/MMA microspheres, and the functionalized microspheres GMA/MMA NHPI were obtained through several polymer reaction steps. GMA/MMA-NHPI microspheres were characterized by infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). Results show that the synthesis and immobilization of NHPI on GMA/MMA microspheres can be carried out smoothly. The compositional catalyst system of GMA/MMA-NHPI microspheres and Co(OAc)2 displays fine catalytic activity in the oxidation reactions of cyclohexane and cyclohexanol with molecular oxygen as oxygen source.