Synthesis of nanocrystalline cellulose induced hierarchical porous ZSM-5 for catalytic conversion of low-density polyethylene

• Published in: Fuel (Guildford) 2023-01, Vol.331, p.125757, Article 125757
• Main Authors: Duan, Dengle, Zhang, Yongchuan, Li, Juncheng, Huang, Liyin, Xu, Zhimin, Zhang, Yayun, Sun, Weimin, Wang, Qin, Ruan, Roger
• Format: Article
• Language: English
• Subjects: Catalytic pyrolysis; Fuels; Hierarchical ZSM-5; Low-density polyethylene; Nanocrystalline cellulose
• ISSN: 0016-2361
• DOI: 10.1016/j.fuel.2022.125757

[Display omitted] •A new catalyst of hierarchical ZSM-5 based nanocellulose was developed.•High yield of bio-oil (71.2%) was obtained by the new catalyst.•More than 94% of bio-oil components were hydrocarbons in jet fuel range.•The cycloalkanes selectivity can be improved by the new catalyst. The catalytic pyrolysis of low-density polyethylene over hierarchical HZSM-5 zeolite was studied to improve liquid oil quality in a facile reactor for the first time. The HZZ was successfully synthesized by using green and inexpensive nanocrystalline cellulose as a mesoporous template. Nanocrystalline cellulose played a disturbing role in the crystallization process of hierarchical HZSM-5 zeolite, which facilitated the formation of ordered surface morphology and excellent porous structure. Compared with conventional HZSM-5, hierarchical HZSM-5 zeolite can significantly improve the bio-oil yield. The relative content of cycloalkanes increased while the relative content of aromatics decreased. The 94.4 area.% of jet fuel range hydrocarbons with 51.8 area.% cycloalkanes and 25.0 area.% of aromatics can be obtained. Hierarchical HZSM-5 zeolite with a low Si/Al ratio had high acidity favors high liquid yield and aromatic hydrocarbon selectivity. The current work contributes to the green synthesis of Hierarchical HZSM-5 zeolite while providing a novel catalyst for value-added fuels production from waste plastics pyrolysis.