Propylene Aromatization에 미치는 온도 및 촉매의 영향

Effect of Temperature on Propylene Aromatization over MFI Type Zeolites

[Ga]-MFI and H-ZSM-5 catalysts were synthesized under atmospheric pressure and used in the propylene aromatization. The effect of temperature on the product distribution was also investigated. The catalytic activities of the prepared catalysts were compared with the commercialized H-ZSM-5 which was converted from NH_{4}-ZSM-5. In the propylene aromatization, product distribution does not depend on the ratio of Si/Ga_{2}with [Ga]-MFI catalyst, but depend on the ratio of Si/Al_{2}with H-ZSM-5 catalyst [Ga]-MFI catalyst shows better dehydrogenation and alkylation activities than H-ZSM-5 catalyst The addition of Ga to H-ZSM-5 catalyst increases the conversion of propylene, selectivity to aromatics, and alkylation. In the propylene aromatization, the selectivity to aromatics slightly increased with increasing temperature with [Ga]-MFI catalyst, while slightly decreased with increasing temperature with H-ZSM-5 catalyst