Abstract: Cobalt-containing mesoporous molecular sieves Co-SBA-15 were prepared using Co(NO3)2.6H2O as cobalt source and the obtained molecular sieves were characterized by XRD and BET. Test results showed that Co-SBA-15 possessed the characteristic structural features of mesoporous molecular sieve. The performance of Co-SBA-15 for catalytic oxidation of styrene was investigated using 30% H2O2 as oxidant and acetone as solvent. Under the conditions of using 5 mL of styrene, 10 mL of acetone, 100 mg Co(15%)-SBA-15 catalyst calcined at 500 ℃, H2O2/styrene molar ratio of 2, a reaction temperature of 100 ℃ and a reaction time of 4 h, the conversion of styrene reached 99.12%, the selectivity and yield of benzaldehyde was 77.62% and 76.94%, respectively.

Key words: Co-SBA-15, mesoporous molecular sieve, catalytic oxidation, styrene, benzaldehyde