| 초록 |
The epoxidation of propylene to propylene oxide by molecular oxygen was studied over a Ag/α-Alumina catalysts. The Water-alcohol method is more dispersive than precipitation method. When the silver particle size is 25nm, it is more yield and selectivity than any other catalysts. In this case, propylene oxide selectivity up to 16.61% at 3.13% propylene conversion. This behavior correlates with changes in silver particle size distribution as revealed by XRD and SEM. And Oepox species can be attributed to the reaction as showed TPD profile.
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