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The present study describes the performance of the HZSM-5 zeolite catalyst modified by Cu, Zn, Ga, La, P, Ag, and other ions for the conversion of methanol to aromatics in a fixed-bed reactor, and the influences of the system pressure and temperature on methanol aromatization are in discussion. The results show that the optimum single ion for the modification of catalyst was Zn or Cu. The optimum combined ions were Zn and Ga. The yield of aromatics could reach up to 66.6% on the catalyst modified with Ga2% and Zn10%. [ABSTRACT FROM AUTHOR]

The present study describes the performance of H/ZSM-5 catalyst modified with different ZnO contents for the conversion of methanol to aromatics. The contribution of zinc ions was evaluated by analyzing the acid site density, specific surface area, pore structure, and so on, of ZnO/ZSM-5 catalysts. The results showed that the catalytic activity reached a maximum when the content of ZnO was 8 wt%, and the total product yield could reach 56.2%, of which aromatics accounted for 95 wt%. [ABSTRACT FROM AUTHOR]