Cobalt zeolitic imidazolate framework (ZIF-9@Zeolite) was synthesized by Co(II) nitrate, benzylimidazole and zeolite. It was characterized by the FTIR, SEM, TEM and BET methods. Efficient catalytic oxidation of benzyl alcohols into corresponding benzaldehydes was studied using catalytic system of ZIF-9@Zeolite. The effect of different factors such as the amount of oxidant, reaction time and reaction temperature on the oxidation reaction was investigated. Interestingly, ZIF-9@Zeolite was very efficient for the oxidation reaction of alcohols and a high yield of aldehydes could be obtained. [GRAPHICS]