Evolution of lignin pyrolysis heavy components through the study of representative lignin monomers

被引:11
作者
Qiu, Yi [1 ]
Zhong, Dian [2 ]
Zeng, Kuo [1 ,2 ]
Li, Jun [2 ]
Yang, Haiping [2 ]
Chen, Hanping [2 ]
机构
[1] Huazhong Univ Sci & Technol, China EU Inst Clean & Renewable Energy, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, State Key Lab Coal Combust, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China
基金
中国国家自然科学基金; 国家杰出青年科学基金;
关键词
Pyrolysis; Lignin; Heavy components; FT-ICR-MS; KMD; Van Krevelen diagram; BIO-OIL; LIGNOCELLULOSE FRACTIONATION; DEPOLYMERIZATION; VALORIZATION; MECHANISMS; OLIGOMERS; CELLULOSE; PLATFORM; TAR;
D O I
10.1016/j.fuproc.2023.107910
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Seven typical lignin monomers with different number of methoxyl groups and different 4-substituted patterns were pyrolyzed at 500 degrees C and 700 degrees C for 120 s to simulate the secondary polymerization and side chain con-version reactions of primary pyrolytic lignin monomers. The pyrolytic heavy oil components were identified at molecular scale with Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR-MS) and analyzed with Kendrick mass defect (KMD) and van Krevelen diagrams. The detected heavy components were typically phenolic oligomers formed dominantly through the radical coupling reactions of phenol radicals (C6H4O) and methoxyl radicals (OCH2). Model compounds with C--C type 4-substituted groups were prone to produce more phenolic oligomers with more aromatic units. For the C--O type model compounds, the number of methoxyl groups have significant influence on the generation of heavy components, thereby affecting the char yields. Rising temperature promotes the generation of heavy components through three main routes, namely the ad-ditions of CH2, OCH2 and C6H4O. These routes were mapped on van Krevelen diagrams, shedding light on the evolution patterns of both polymerization and side chain conversion reactions during the secondary pyrolysis of lignin.
引用
收藏
页数:14
相关论文
共 50 条
[41]   A computational study of pyrolysis reactions of lignin model compounds [J].
Elder, Thomas .
HOLZFORSCHUNG, 2010, 64 (04) :435-440
[42]   Interactions of cellulose- and lignin-derived radicals during pyrolysis: An in-situ Electron Paramagnetic Resonance (EPR) study [J].
Ma, Liqun ;
Syed-Hassan, Syed Shatir A. ;
Tong, Yuxing ;
Xiong, Zhe ;
Chen, Yuanjing ;
Xu, Jun ;
Jiang, Long ;
Su, Sheng ;
Hu, Song ;
Wang, Yi ;
Xiang, Jun .
FUEL PROCESSING TECHNOLOGY, 2023, 239
[43]   Prediction of pyrolysis of pistachio shells based on its components hemicellulose, cellulose and lignin [J].
Peters, Bernhard .
FUEL PROCESSING TECHNOLOGY, 2011, 92 (10) :1993-1998
[44]   Pyrolysis mechanism of α-O-4 linkage lignin dimer: A theoretical study [J].
Huang, Jinbao ;
He, Chao .
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 2015, 113 :655-664
[45]   Kinetic Study on The Slow Pyrolysis of Isolated Cellulose and Lignin from Teak Sawdust [J].
Kristanto, Jonas ;
Daniyal, Ahmad Fahmi ;
Pratama, Dimas Yoga ;
Bening, Islamey Noer Manikam ;
Setiawan, Lunardi ;
Azis, Muhammad Mufti ;
Purwono, Suryo .
THERMOCHIMICA ACTA, 2022, 711
[46]   Study on the Relationship between the Structure and Pyrolysis Characteristics of Lignin Isolated from Eucalyptus, Pine, and Rice Straw through the Use of Deep Eutectic Solvent [J].
Li, Tengfei ;
Jin, Xin ;
Shen, Xinyao ;
Liu, Hangdan ;
Tong, Ruiping ;
Qiu, Xuzhen ;
Xu, Junfei .
MOLECULES, 2024, 29 (01)
[47]   Study on the Evolution Pattern of the Aromatics of Lignin during Hydrothermal Carbonization [J].
Sun, Wendi ;
Bai, Li ;
Chi, Mingshu ;
Xu, Xiuling ;
Chen, Zhao ;
Yu, Kecheng .
ENERGIES, 2023, 16 (03)
[48]   Study of the mechanism of Substituent effects in lignin pyrolysis using density functional theory [J].
Cui, Da ;
Zhang, Mingzhu ;
Yin, Helin ;
Wu, Shuang ;
Fattahi, Moslem ;
Luk, Hon Man ;
Wen, Gaochen ;
Zhang, Xuehua ;
Wang, Qing .
JOURNAL OF THE ENERGY INSTITUTE, 2025, 119
[49]   STUDY ON REACTION CHARACTERISTICS AND PRODUCTS OF PYROLYSIS COUPLED CATALYTIC REFORMING OF VARIOUS LIGNIN [J].
Yang G. ;
Zhang W. ;
Shen D. .
Taiyangneng Xuebao/Acta Energiae Solaris Sinica, 2023, 44 (07) :520-529
[50]   Formation mechanism of CH4 during lignin pyrolysis: A theoretical study [J].
Jiang, Xiaoyan ;
Wang, Wenlu ;
Hu, Bin ;
Zhang, Bing ;
Li, Kai .
JOURNAL OF THE ENERGY INSTITUTE, 2022, 100 :237-244