Enhancement of the production of bio-aromatics from renewable lignin by combined approach of torrefaction deoxygenation pretreatment and shape selective catalytic fast pyrolysis using metal modified zeolites

被引：98
作者：
Huang, Ming [1 ]
Ma, Zhongqing [1 ]
Zhou, Bingliang [2 ]
Yang, Youyou [1 ]
Chen, Dengyu [3 ]
机构：
[1] Zhejiang A&F Univ, Sch Engn, Zhejiang Prov Collaborat Innovat Ctr Bamboo Resou, Hangzhou 311300, Zhejiang, Peoples R China
[2] Jiangsu Univ, Sch Agr Equipment Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[3] Nanjing Forestry Univ, Coll Mat Sci & Engn, Nanjing 210037, Jiangsu, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 301卷
关键词：
Lignin; Torrefaction deoxygenation pretreatment; Catalytic fast pyrolysis; Metal modified zeolite; Bio-BTX; PALM KERNEL SHELL; PART; 2; BIOMASS; HYDROCARBONS; HZSM-5; TRANSFORMATION; ETHYLBENZENE; COMPONENTS; CONVERSION; CELLULOSE;
D O I：
10.1016/j.biortech.2020.122754
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this work, combined approach of torrefaction deoxygenation pretreatment (TDP) and shape selective catalytic fast pyrolysis (SS-CFP) using bifunctional catalyst (metal modified HZSM-5) were employed to improve the yield of bio-BTX derived from the renewable starting material of lignin. Results showed that after TDP, the oxygen element could be removed effectively. The oxygen removal efficiency reached its maximum value of 22.27% at 300 degrees C, resulting in markedly decrease of unnecessary oxygenates in bio-oil. Compared to parent HZSM-5, all metal modified HZSM-5 (Ga/HZSM-5, Zn/HZSM-5, and Ga-Zn/HZSM-5) promoted the formation of bio-BTX. Zn/HZSM-5 showed the highest selective yield of bio-BTX because of the enhancement deoxygenation reaction of oxygenates and the aromatization reaction of olefins. The combined approach of TDP and SS-CFP remarkably improved the selective yield of bio-BTX, reaching the maximum value of 65.19%, which was much higher than that from single approach of TDP (33.84%) and SS-CFP (47.36%).
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页数：9
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