MODIFIED HZSM-5 CATALYZED CO-PYROLYSIS OF CORN STOVER AND HDPE TO BTEXN

被引：0
|
作者：
Li Y. [1 ]
Zhao M. [1 ]
Li M. [1 ]
Song R. [1 ]
机构：
[1] Clean Energy Key Laboratory of Liaoning, Shenyang Aerospace University, Shenyang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 04期
关键词：
biomass; BTEXN; high density polyethylene; HZSM-5; pyrolysis;
D O I：
10.19912/j.0254-0096.tynxb.2021-1534
中图分类号：
学科分类号：
摘要：
To improve the yield of BTEXN and light olefins in co-pyrolysis of biomass with polyethylene while inhibiting the formation of C+21 waxes，the effects of HZSM-5 and modified HZSM-5 in catalytic co-pyrolysis on the interaction between corn stover and HDPE are investigated by TG-MS/FTIR and Py-GC/MS. The results show that in the catalytic co-pyrolysis of HZSM-5，HZSM-5 promotes the mutual reaction between corn stover and HDPE，and the aromatic and light hydrocarbon yields increase. Compared with HZSM-5，in the catalytic co-pyrolysis of modified HZSM-5，modified HZSM-5 promotes the precipitation of light olefins，C5-C11 aliphatic hydrocarbons and aromatics，and inhibits the formation of C+21 waxes. Cu，Fe and Ce modifications promote monocyclic aromatic hydrocarbon formation while increasing BTEXN yield by 20.99 mg/g，25.43 mg/g and 20.89 mg/g respectively，compared to HZSM-5. Inversely，P modification inhibits BTEXN formation. For the Diels-Alder reaction，which forms aromatics，Fe and Ce modifications show stronger catalytic effect，while Cu modifications are more effective in catalyzing the hydrocarbon pool reaction. In addition，carbon accumulation analysis show that Fe and P modifications have stronger resistance to carbon accumulation. © 2023 Science Press. All rights reserved.
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页码：238 / 246
页数：8
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