Pyrolysis behavior of levoglucosan as an intermediate in cellulose pyrolysis: polymerization into polysaccharide as a key reaction to carbonized product formation

被引：191

作者：

Kawamoto, H ^{[1
]}

Murayama, M ^{[1
]}

Saka, S ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Energy Sci, Dept Socioenvironm Energy Sci, Sakyo Ku, Kyoto 6068501, Japan

来源：

JOURNAL OF WOOD SCIENCE | 2003年 / 49卷 / 05期

关键词：

pyrolysis mechanism; cellulose levoglucosan; polymerization; carbonization;

D O I：

10.1007/s10086-002-0487-5

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Pyrolysis behavior of levoglucosan (1,6-anhydro-beta-D-glucopyranose), the major anhydromonosaccharide formed during cellulose pyrolysis, was studied at 250degrees 400 degreesC under nitrogen. The pyrolysis products were found to change stepwise: levoglucosan --> MeOH-soluble fraction (lower-molecular-weight products and oligosaccharides) --> water-soluble fraction (polysaccharides) --> insoluble fraction (carbonized products). From the present experimental results, a pathway of cellulose pyrolysis via anhydromonosaccharide is proposed including polymerization to polysaccharides (a reversible reaction) as a key reaction to carbonized product formation.

引用

页码：469 / 473

页数：5