Catalytic upgrading of lignocellulosic biomass pyrolysis vapors: Insights into physicochemical changes in ZSM-5

被引：26

作者：

Wang, Dechao ^{[1
]}

Zhu, Yongfeng ^{[1
]}

Chen, Jinlei ^{[1
]}

Li, Wenbin ^{[1
]}

Luo, Fenqiang ^{[1
]}

Li, Shuirong ^{[1
]}

Xie, Wei ^{[2
]}

Liu, Jiangsheng ^{[2
]}

Lan, Hongqiao ^{[2
]}

Zheng, Zhifeng ^{[1
]}

机构：

[1] Xiamen Univ, Fujian Prov Engn & Res Ctr Clean & High Valued Te, Xiamen Key Lab High Valued Convers Technol Agr Bi, Coll Energy,Fujian Prov Ind Technol Dev Base New, Xiamen 361102, Peoples R China

[2] China Tobacco Fujian Ind Co, Technol Ctr, Xiamen 361021, Peoples R China

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2021年 / 156卷 / 156期

基金：

中国国家自然科学基金;

关键词：

Biomass; Three main components; Pyrolysis; ZSM-5; Coke; BIO-OIL; AROMATICS PRODUCTION; CELLULOSE; CONVERSION; HEMICELLULOSE; LIGNIN; CHALLENGES; CRACKING; WOOD;

D O I：

10.1016/j.jaap.2021.105123

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Catalytic fast pyrolysis of biomass is an effective strategy for the preparation of high value-added liquid fuels or chemicals. Understanding the effects of different biomass materials on the physicochemical property changes of ZSM-5 is important for the design of modified catalysts and targeted regulation of products. In this study, the catalytic upgrading of lignocellulosic biomass over ZSM-5 was investigated. Lignin, cellulose and xylan were used as model compounds of lignocellulosic biomass, and the upgraded products were analyzed online. Several techniques were used to gain a deep understanding of the physiochemical changes in ZSM-5. The results showed that the addition of ZSM-5 contributed to the production of aromatic hydrocarbons and olefins. The crystal structure and morphology of ZSM-5 were not changed, but the total acid, Bronsted and Lewis acid contents decreased. The amount of coke deposited on ZSM-5 follows the order cellulose/ZSM-5 > xylan/ZSM-5 > lignin/ ZSM-5. Coke on cellulose/ZSM-5 has the lowest H/C ratio of 0.50. Coke on ZSM-5 will create new micropores and increase the specific surface area of micropores.

引用

页数：9

共 40 条

[1] Catalytic upgrading of bio-oils over high alumina zeolites [J].