Abstract: V-AlPO5 molecular sieves synthesized by the hydrothermal method was confirmed by XRD patterns. The catalytic activity of V-AlPO5 toward the benzene hydroxylation was influenced by the different synthetic conditions. The catalyst prepared from the optimized condition showed a relative high reaction activity toward the probed reaction. The optimistic reaction conditions:0.2 g catalysts, 0.2 g ascorbic acid, 10 mmol benzene and 15 mmol 35%H2O2 were added in 6 mL acetonitrile, the reaction was kept for 24 h under 55 ℃. Under these conditions, the phenol yield was 16.1% with a selectivity of 86.8%.

Key words: Benzene, Phenol, molecular sieves, V-AlPO5, hydroxylation, hydroperoxide