Dehydro-Aromatization of n-Hexane over Zinc Modified WC/HZSM-5 Catalysts

Abstract

The aromatization of n-hexane was studied over Zn-WC/HZSM-5 catalyst prepared by impregnation and reduction-carbonization method. The effect of zinc content on aromatization selectivity of Zn-WC/HZSM-5 was investigated. The results show that the 1% Zn-WC/HZSM-5 was the most active catalyst attaining an aromatic selectivity of 35% at 550°C, which was much higher than that of WC/HZSM-5. It was found experimentally that a proper amount of Zn and WC resulted not only in the higher selectivity of aromatization of n-hexane but also in decreasing of coke deposition.