Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6630708 | Fuel | 2018 | 9 Pages |
Abstract
A bifunctional Fe/HZSM-5 catalyst was prepared for direct synthesis of aromatics from syngas. The influence of iron loading on acidity and syngas to aromatics (STA) performances over the Fe/HZSM-5 catalysts was studied. An increasing iron loading increased the amounts of active iron species, enhancing synergistic effect of active iron sites and HZSM-5 for the STA reaction. Higher iron loading in the Fe/HZSM-5 catalyst resulted in the decrease of Brönsted acid sites and increase of Lewis acid sites, promoting the formation of C5+ hydrocarbons and aromatics selectivity via weakening the cracking ability and enhancing the dehydrogenation property of HZSM-5. Excessive adding of iron loading induced the formation of graphitic carbon deposition, leading to a decrease of catalytic activity and stability.
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Authors
Yanfei Xu, Jingge Liu, Guangyuan Ma, Jie Wang, Jianghui Lin, Hongtao Wang, Chenghua Zhang, Mingyue Ding,