Journal
BIORESOURCES
Volume 11, Issue 3, Pages 5870-5888Publisher
NORTH CAROLINA STATE UNIV DEPT WOOD & PAPER SCI
DOI: 10.15376/biores.11.3.5870-5888
Keywords
Cellulose; Pyrolysis; Kinetic; Thermogravimetry
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Funding
- Spanish Ministerio de Educacion y Ciencia [MTM2011-22393, MTM2014-52876-R]
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In spite of the many studies performed, there is not yet a kinetic model to predict the thermal degradation of cellulose in isothermal and non-isothermal conditions for the full extent of conversion. A model proposed by the authors was tested on non-oxidising thermogravimetric data. The method consisted of initially fitting several isothermal and non-isothermal curves, then obtaining a critical temperature and an energy barrier from the set of fittings that resulted from different experimental conditions. While the critical temperature, approximately 226 degrees C, represented the minimum temperature for the degradation process, the degradation rate at a given temperature was related to both the critical temperature and the energy barrier. These results were compared with those observed in other materials. The quality of fittings obtained was superior to any other reported to date, and the results obtained from each single curve were in line with each other.
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