Chemical changes in black alder (Alnus glutinosa) and European aspen (Populus tremula) during heating at 150-220° in a nitrogen atmosphere

被引：0

作者：

Kotilainen, RA ^{[1
]}

Alen, RJ ^{[1
]}

Toivanen, TJ ^{[1
]}

机构：

[1] Univ Jyvaskyla, Dept Chem, Lab APpl Chem, FIN-40351 Jyvaskyla, Finland

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2001年 / 35卷 / 3-4期

关键词：

Alnus glutinosa; Populus tremula; heat treatment; nitrogen atmosphere; chemical composition; elemental composition; UV/Vis spectrophotometry; PLS model;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Two hardwood (Alnus glutinosa and Populus tremula) samples were heat-treated in a nitrogen atmosphere for 180 minutes in the 150 - 220 degrees temperature range. The monitored chemical changes (the total mass losses were between 1.6 and 19.0 % of the initial dry solids) indicated that of the wood components in these wood feedstock, carbohydrates, especially hemicelluloses, degraded clearly more readily during heating than lignin. It was easy to detect by UV/Vis spectroscopy and elemental analysis of the heat-treated samples the chemical changes that occurred, suggesting the viability of monitoring thermal treatment of this kind.

引用

页码：275 / 284

页数：10

共 19 条

[1] Formation of the main degradation compound groups from wood and its components during pyrolysis
Alen, R
Kuoppala, E
Oesch, P
[J]. JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 1996, 36 (02) : 137 - 148
[2] ALEN R, 2000, IN PRESS WOOD SCI TE
[3] BIERMANN CJ, 1990, ANAL CARBOHYDRATES G, P27
[4] Colthup N.B., 1964, INTRO INFRARED RAMAN
[5] Fengel D., 1989, WOOD CHEM ULTRASTRUC
[6] KLEEN M, 1993, THESIS ROYAL I TECHN
[7] Kotilainen R, 1999, PAP PUU-PAP TIM, V81, P384
[8] KOTILAINEN R, UNPUB WOOD CHEM TECH
[9] Macleod M., 1987, PULP PAP J, V5/6, P38
[10] A spectroscopic method for determining lignin content of softwood and hardwood kraft pulps
Malkavaara, P
Alén, R
[J]. CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 1998, 44 (1-2) : 287 - 292

← 1 2 →