Vanadium-aluminophosphate, type eleven (VAPO-11), synthesized by the hydrothermal method, was used as catalyst for oxidation of toluene, in a differential reactor, at temperature 430–470°C, varying the space time (W/F_o). The reaction products were analyzed in a gas chromatograph coupled on line to the reactor. The results obtained indicate that VAPO-11 is an active catalyst for the oxidation of toluene to benzene and benzaldehyde.