A Comparative Study of n-Octane Aromatization over Modified MFI- and MEL-Type Zeolite Catalysts

摘要

Thailand The aromatization of n-octane was studied over modified MFI-(ZSM-5) and MEL-(ZSM-11) type zeolite catalysts as bifunctional catalysts to investigate the effect of pore geometry on their catalytic activity and product distribution. ZSM-5 and ZSM-11 zeolites were synthesized by the conventional method and characterized by using XRD, SEM, ICP-OES, and surface area analyzer. Zinc was loaded into the synthesized zeolites by ion exchange to prepare Zn/HZSM-5 and Zn/HZSM-11 catalysts which were then tested for aromatization at 500 deg C under atmospheric pressure. Preliminary results revealed that Zn loaded into both zeolites provided a significant increase in total aromatics selectivity.