In this work, SAPO-34 and a series of meso-CeAPSO-34(mesoporous cerium incorporated silicoaluminophosphate, X = Ce/Al molar ratio, X = 0, 0.02, 0.05, 0.07, and 0.10) catalysts with different Ce/Al molar ratio(X) were applied for olefin generation, especially propylene. The chloromethane to olefin (CMTO) reaction at 450 °C demonstrated that meso-CeAPSO-34(0.05) catalysts showed stable chloromethane conversion, with the highest propylene selectivity. The CM conversion increased with the introduction of mesoporosity. The mesopore volume increased and the amount of active sites maintained sufficiently high with the incorporation of cerium. The structural stability of the catalysts and the diffusivity of products improved with the addition of proper amount of cerium. In summary, the enhancement of the physicochemical properties of the catalysts played a crucial role in catalytic stability and the selective production of propylene in the CMTO reaction, resulting in stably high CM conversion and the highest propylene selectivity over meso-CeAPSO-34(0.05) catalyst.
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