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.
Bibliographical noteFunding Information:
This work was supported by National Natural Science Foundation of China (No. 22008073 ), Shanghai Sailing Program (No. 20YF1410600), Guangdong Common Colleges Young Innovative Talents Project (No. 2021KQNCX029), Special Funds for the Cultivation of Guangdong College Students' Scientific and Technological Innovation. (“Climbing Program” Special Funds. No. pdjh2022b0256), College Student Innovation Fund Project of Zhongkai University of Agriculture and Engineering (No. S202111347047 and No. X202111347137), 2022 College Student Innovation and Entrepreneurship Training Program Project (No. X202211347155), High-level Introduction of Talent Scientific Research Start-up Fund of Zhongkai University of Agriculture and Engineering (No. KA2005408E4).
- Catalytic pyrolysis
- Hierarchical ZSM-5
- Low-density polyethylene
- Nanocrystalline cellulose