| 초록 |
A series of CoAPSO-34(cobaltsilicoaluminophosphate, X = Co/Al, X = 0, 0.02, 0.05, 0.07, and 0.10) catalysts with different Co/Al molar ratio(X) were prepared for use in the chloromethane to olefin (CMTO) reaction to produce light olefins, such as ethylene and propylene. The CMTO reaction at 450 °C showed that CoAPSO-34(0.05) catalyst had the highest chloromethane conversion among the catalysts with a conversion of 78.75 % at the reaction time of 250 min. The deposition of coke originating from polymethylbenzene species is thought to be the main reason for deactivation of the catalysts. Both the acidic properties and textural properties of the catalysts play a crucial role in determining the catalytic activities in the chloromethane to olefin reaction, resulting in the highest chloromethane conversion and light olefin selectivity over CoAPSO-34(0.05) |
