Enhanced Catalytic Pyrolysis of Glycerol into Gasoline Over TS-1/ZSM-5 Hybrid Catalysts
摘要
Over the past decade, research on glycerol transformation into high-added-value chemicals has been increasing each year. Moreover, the huge availability of glycerol as a by-product in biodiesel production calls for the massive valorization of glycerol for various applications, including biofuels. In this regard, ZSM-5 zeolite has shown outstanding performance in catalyzing the glycerol conversion into gasoline through the pyrolysis pathway. However, ZSM-5 is prone to deactivation due to the fast coke formation rate inside the zeolite framework. This work presented a TS-1/ZSM-5 hybrid for the pyrolysis of glycerol into gasoline. The hybrid was simply prepared by the hydrothermal method and further analyzed for its structural, morphological, and porosity characteristics. The prepared TS-1/ZSM-5 hybrid exhibited excellent porosity features (SBET: 323 m2/g, Sext: 205 m2/g, and mesopore volume: 0.18 cm3/g). These characteristics improved the catalytic performance by increasing the production of the liquid products (95.10 wt%) and gasoline yield (65.97 wt%). Further, TS-1/ZSM-5 hybrid generated lower cokes (4.19 wt%) than ZSM-5 (7.33 wt%). These results suggest that this material is promising to be used as a catalyst in glycerol conversion into gasoline.