Effect of alkali-modified HZSM-5 modified on catalytic pyrolysis of biomass model compounds

被引：0
|
作者：
Li Y. [1 ]
Yi J. [1 ]
He Q. [1 ]
Yang Z. [1 ]
机构：
[1] Clean Energy Key Laboratory of Liaoning, Shenyang Aerospace University, Shenyang
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2022年 / 43卷 / 05期
关键词：
Alkali modification; Biomass energy; Catalytic pyrolysis; HZSM-5;
D O I：
10.19912/j.0254-0096.tynxb.2020-0835
中图分类号：
学科分类号：
摘要：
In this experiment, Py-GC/MS was used to investigate the influence mechanism of product distribution of biomass model compounds in catalytic pyrolysis of HZSM-5 modified by NaOH, Na2CO3 and CTAB/TPAOH at 500 ℃. The results showed that the yield of small-molecular ketones, phenols and esters in the products was increased in catalytic pyrolysis over HZSM-5 modified by 0.1 mol/L NaOH/Na2CO3, and the formation of C≥5 hydrocarbon was enhanced. 0.2 mol/L NaOH/Na2CO3 modification HZSM-5 catalyst facilitates decarbonylation and dehydroxylation, and promotes the cracking of cyclic compounds into chain compounds. The yield of ketones in the products decreased to 18.56% and that of aldehydes increased to 3.01% in pyrolysis over HZSM-5 co-modified by utilization of TPAOH and NaOH. Meanwhile, the yield of C≥9 hydrocarbon decreased in the catalytic pyrolysis, which was due to that C≥9 hydrocarbon converted to C≤4 hydrocarbon, and the yield of chain hydrocarbons increased. C≥9 hydrocarbon in the products converted to C5-8 hydrocarbon in the pyrolysis over HZSM-5 co-modified by CTAB and NaOH, and the yield of cyclic hydrocarbon increased in this process. © 2022, Solar Energy Periodical Office Co., Ltd. All right reserved.
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页码：383 / 390
页数：7
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