Metal clusters complexes ofCo, Co/Mn and Co/Mn/Cu hybrids of [Co3(O)(CH3COO)6-(py)3]-Y (Co3(O)-Y),[Co2Mn(O)(CH3COO)6-(py)3]-Y (Co2Mn(O)-Y) and [CoMnCu(O)(CH3COO)6-(py)3]-Y were synthesis into the nanocage of dealuminated Y zeolite by ship-in-a-bottle synthesis method. These catalytic systems characterized by FT-IR, FESEM, XRD and AA spectroscopy. Catalytic activity of these catalytic systems was investigated in the epoxidation of cyclohexene as a model substrate in the presence of H2O2/O2as an oxidant system and acetic acidas solvent at room temperature under magnetic stirring conditions. Among the heteregenous catalyst systems, homonuclear metal cluster showed higher catalytic activity than others. In general, the catalytic activity of heterogenous catalyst reductions as follows: Co3(O)-YCo2Mn(O)-YCoMnCu(O)-Y.
