Aromatization of n-hexane over H-ZSM-5: Influence of promoters and added gases Original Research Article

The influence of promoters such as ZnO, Ga2O3, Fe2O3 and Cr2O3 on the aromatization of n-hexane over H-ZSM-5 is reported. While ZnO and Ga2O3 increase aromatization, Fe2O3 and Cr2O3 decrease the aromatization. The addition of N2 to the feed increases aromatization over H-ZSM-5, while H2 decreases aromatization. Increasing the total pressure to 15 bars does not significantly decrease the yield of aromatics. Investigations on the influence of the promoters, added gas and total pressure on the rate of deactivation of the catalyst are also reported.