| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 49629 | Catalysis Communications | 2015 | 4 Pages |
•Aromatization of n-hexane was studied over Mo, Zn and Ga modified H-ZSM-5 catalyst.•Aromatic activity was dominant for Ga and Zn modified catalysts.•Addition of Mo enhanced cracking activity of the H-ZSM-5 catalyst at 500 °C.•High reaction temperatures (> 550 °C) lead to a decrease in aromatic selectivity.
n-Hexane aromatization was investigated at 500 °C on parent and metal (i.e. Ga, Mo and Zn) modified H-ZSM-5 zeolite catalysts. Conversion reached 88% over H-ZSM-5 and was stable. Addition of metal resulted in lower conversion (< 80%). Formation of aromatic compounds was favored on Ga/H-ZSM-5 (> 35%) and Zn/H-ZSM-5 (> 40%) while H-ZSM-5 and Mo/H-ZSM-5 showed higher cracking activity. Gallium and zinc favored aromatization. At 600 °C a decrease in activity with increasing TOS was observed. A decrease in aromatics selectivity was also observed. The aromatics selectivity with increase in TOS of Ga/H-ZSM-5 (43–27%) and Mo/H-ZSM-5 (35–27%) catalysts was higher than for Zn/H-ZSM-5 (46–7%).
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