Optimized production of aromatic hydrocarbons via corn stover pyrolysis: Utilizing high-density polyethylene as a hydrogen donor and red mud as a catalyst
文献类型: 外文期刊
作者: Ran L.;Zhang X.;Liu Z.;Zhang A.;Qi S.;Huang X.;Yi W.;Li Z.;Zhang D.;Wang L.
作者机构:
关键词: Biomass;Catalytic co-pyrolysis;Mono-aromatics;Red Mud;Waste plastic
期刊名称: Journal of Analytical and Applied Pyrolysis
ISSN: 0165-2370
年卷期: 2024 年 182 卷
页码:
收录情况: SCIE(2024版) ; ; EI(2024版)
摘要: Biomass pyrolysis offers a promising route for high-value bio-oil production, yet the process is limited by low deoxygenation efficiency. In this study, high-density polyethylene (HDPE) served as a hydrogen donor, and acid-washed red mud (ACRM) acted as a catalyst to enhance the pyrolysis of corn stover (CS) for producing monocyclic aromatic hydrocarbons (MAHs). The results showed that the addition of ACRM significantly reduced the activation energy for co-pyrolysis, enhanced the reaction rate, and strengthened the synergistic effects between CS and HDPE. Optimal conditions yielded a MAHs selectivity of 64.5 % at 650°C with a CS: HDPE ratio of 1:1. However, excessively high temperatures facilitated the cyclization and polymerization of MAHs into polycyclic aromatic hydrocarbons, while a high HDPE ratio diminished the synergistic effects. Furthermore, recycling tests confirmed the effective reusability of ACRM, with MAHs yields remaining above 40 % after four cycles. This study highlights the potential for valorizing industrial and agricultural wastes. © 2024 Elsevier B.V.
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