Abstract: The suspension polymerization of glycidyl methacrylate (GMA) and methyl methacrylate (MMA) was conducted, resulting in polymeric microspheres GMA/MMA. Subsequently, p-hydroxybenzaldehyde (HBA) was bonded on GMA/MMA, obtaining modified microspheres HBA-GMA/MMA. Adler reaction was performed by using microspheres HBA-GMA/MMA, benzaldehyde derivatives, and pyrrole in solution, so that the synchronistic synthesis and immobilization of porphyrins on the microspheres GMA/MMA were realized successfully, resulting in three kinds of porphyrin-supported microspheres. The effects of main factors on the process of synchronistic synthesis and immobilization of porphyrin were studied. Via the coordination reaction between the functional microspheres and cobalt salt, polymer-supported cobalt porphyrin was prepared. The catalytic activity of the catalysts was tested in the oxidation reaction of ethyl benzene by oxygen molecules. The results showed that the substitute structure of benzaldehyde derivatives, the acidity of the catalysts, and the polarity of solvents affected the synchronistic synthesis and immobilization of porphyrin greatly. The porphyrin-supported catalysts had obvious catalytic activity for the oxidation reaction. The immobilized cobalt porphyrin with strong electron-withdrawing substitute on phenyl ring has higher catalytic activity.

Key words: glycidyl methacrylate, methyl methacrylate, benzaldehyde, phenyl porphyrin, immobilization, cobalt porphyrin, substituent