Comparative studies on the pyrolysis of cellulose, hemicellulose, and lignin based on combined kinetics

被引：194
|
作者：
Yeo, Jun Yi [1 ]
Chin, Bridgid Lai Fui [1 ]
Tan, Jun Kit [1 ]
Loh, Ying Sheng [1 ]
机构：
[1] Curtin Univ, Fac Engn & Sci, Dept Chem Engn, Sarawak Campus,CDT 250, Miri 98009, Sarawak, Malaysia
来源：
JOURNAL OF THE ENERGY INSTITUTE | 2019年 / 92卷 / 01期
关键词：
Kinetics; Pyrolysis; Cellulose; Hemicellulose; Lignin; RUBBER SEED SHELL; THERMAL-DEGRADATION; BIOMASS PYROLYSIS; MODEL; XYLAN; DECOMPOSITION; MECHANISM; BEHAVIOR;
D O I：
10.1016/j.joei.2017.12.003
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The thermal degradation behavior and pyrolytic mechanism of cellulose, hemicellulose, and lignin are investigated at different heating rates from 10 Kmin(-1) to 100 Kmin(-1) with a step-size of 10 Kmin(-1) using thermogravimetric analysis (TGA) equipment. It is observed that there are one, two, and three stages of pyrolytic reactions takes place in cellulose, hemicellulose, and lignin respectively. Isoconversional method is not suitable to analyse pyrolysis of hemicellulose and lignin as it involves multi-step reactions. The activation energies of the main decomposition stage for cellulose, hemicellulose, and lignin are 199.66, 95.39, and 174.40 kJ mol(-)(1) respectively. It is deduced that the pyrolysis reaction of cellulose corresponds to random scission mechanism while the pyrolysis reaction of hemicellulose and lignin follows the order based reaction mechanisms. (C) 2017 Energy Institute. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：27 / 37
页数：11
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