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Development of Impregnation Method for Metal Oxide Coated ZSM-5 and Catalytic Activity Evaluation

This study focuses on establishing an impregnation method to form a thin layer of metal oxides on the surface of ZSM-5. Characterization techniques such as SEM and XRD confirm that no other structures are observed apart from the metal oxide coatings. However, the catalytic activity of these composites was generally found to be insufficient, with the exception of SnO-Al2O3 composites. Low reaction temperatures and the calcination temperature of metals were noted as influencing factors. Further research aims to identify more effective metal oxides, including CeO2, NiO, VO, and CaO, potentially enhancing catalytic performance.

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Development of Impregnation Method for Metal Oxide Coated ZSM-5 and Catalytic Activity Evaluation

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  1. Impregnation method was established • Thin layer of metal oxides can be formed on ZSM-5 surface by incipient impregnation method • No other structure observed from the metal oxide coated ZSM-5 (SEM, XRD) • Catalytic activity was not sufficient (except SnO-Al2O3) - catalytic activity reason (Calc. Temp, metals) - low reaction temperature reason • Search better metal oxides for the reaction CeO2, NiO, VO, CaO, etc

  2. Nano(M)-ZSM-5

  3. Nano(M)-ZSM-5

  4. (SnO)4-Al2O3 -HT

  5. (SnO)4-Al2O3 -HT

  6. SnO-(Al2O3)2 -MO

  7. SnO-(Al2O3)2 -MO

  8. SnO-(Al2O3)2 -MO

  9. SnO-(Al2O3)2/nano(M)-ZSM-5

  10. Nano-ZSM-5 MO(SnAl4)-Nano-ZSM-5 Nano(p)-ZSM-5

  11. Nano-ZSM-5 MO(SnAl4)-Nano-ZSM-5 SnO-(Al2O3)2(BB)/Nano(M)-ZSM-5

  12. Future works • Synthesize Sn-ZSM-5 crystal (impurity level of SnO) • Loading SnO only on ZSM-5 • Loading SnO-Al2O3 at pH 7.0 with higher T & longer aging time Used SnO-(Al2O3)2/nano(M)-ZSM-5

  13. Used SnO-(Al2O3)2/nano(M)-ZSM-5

  14. Used SnO-(Al2O3)2/nano(M)-ZSM-5

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