Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2003
Volume 6
Issue 2
Topic:
Wood Technology
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Zakrzewski R. 2003. PYROLYSIS KINETICS OF WOOD COMPARISON OF ISO- AND POLYTHERMAL THERMOGRAVIMETRIC METHODS, EJPAU 6(2), #04.
Available Online: http://www.ejpau.media.pl/volume6/issue2/wood/abs-04.html

PYROLYSIS KINETICS OF WOOD COMPARISON OF ISO- AND POLYTHERMAL THERMOGRAVIMETRIC METHODS

Roman Zakrzewski

 

ABSTRACT



The values of kinetic parameters Ea (activation energy) and A (preexponential factor) were evaluated for different kinetic models using data from thermogravimetric (TGA) curves obtained in isothermal and polythermal conditions. It was found that diffuse kinetic models D3 and D4 aproximated the experimental data better than first order reaction model F1. The values of kinetic parameters for D3 and D4 models evaluated from both types of TG curves were comparable.

Key words: kinetics of pyrolysis, kinetic models, thermogravimetric analysis..