Transesterification between methanol and propylene carbonate is investigated over transition metal oxide ZnO, CdO catalysts The effects of reaction conditions, the supports and promoter on the catalytic activity are also discussed It is indicated that the catalytic activity is closely related to the surface basicity of the catalysts The yield of DMC can be improved with the surface area and amount of basicity increasing Meanwhile, the addition of promoter is preferential for the DMC yield enhancing It is found that NaX CdO K 2CO 3 catalyst shows the highest activity towards the transesterification with PC conversion and DMC yield being 35 3% and 29 0%, respectively The optimum reaction conditions for NaX CdO K 2CO 3 catalyst are: temperature 393?K～413?K, time 3?
