Abstract
A simple sonochemical method was developed to synthesis uniform sphere-like Co 3O 4 and Mn 3O 4 nanocrystals. Epoxidation of styrene and cyclooctene by anhydrous tert-butyl hydroperoxide over the prepared Co 3O 4 and Mn 3O 4 nanocatalysts was investigated. The results of conversion activity were compared with bulk Co 3O 4 and Mn 3O 4. Under optimized reaction conditions, the nanocatalysts showed a superior catalytic performance as compared to the bulk catalysts. Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and BET surface area, were used to characterize and investigate the nanocatalysts.
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