Cellulose-hemicellulose and cellulose-lignin interactions in wood pyrolysis at gasification temperature

被引：356
|
作者：
Hosoya, T. [1 ]
Kawamoto, H. [1 ]
Saka, S. [1 ]
机构：
[1] Kyoto Univ, Grad Sch Engn Sci, Sakyo Ku, Kyoto 6068501, Japan
来源：
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2007年 / 80卷 / 01期
关键词：
pyrolysis; gasification; interaction; cellulose; hemicellulose; lignin; char formation;
D O I：
10.1016/j.jaap.2007.01.006
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Cellulose-hemicellulose and cellulose-lignin interactions during pyrolysis at gasification temperature (800 degrees C) were investigated with various cellulose samples mixed with hernicellulose (glucomarman or xylan) or milled wood lignin. Significant interactions were observed in cellulose-lignin pyrolysis; lignin inhibited the thermal polymerization of levoglucosan formed from cellulose and enhanced the formation of the low molecular weight products from cellulose with reduced yield of char fraction; cellulose reduced the secondary char formation from lignin and enhanced the formation of some lignin-derived products including guaiacol, 4-methyl-guaiacol and 4-vinyl-guaiacol. Comparatively weak interactions were also observed in cellulose-hemicellulose pyrolysis. Finally, factors influencing the wood pyrolysis at gasification temperature are discussed. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：118 / 125
页数：8
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