Non-Isothermal Pyrolysis of Xylan and Lignin: A Hybrid Simulated Annealing Algorithm and Pattern Search Method to Regulate Distributed Activation Energies

Comparative study of the combustion, pyrolysis and gasification processes of Leucaena leucocephala: Kinetics and gases obtained

“…Pyrolysis is divided into three zones, between 0.05 and 0.25 the degradation of hemicelluloses stands out with an average activation energy of 161 kJ mol −1 close to values reported for hemicellulose isolated bamboo that resulted in 167 kJ mol −1 [ 47 ], followed by a wide zone of cellulose breakdown and a certain amount of lignin between 0.25 and 0.65 with an activation energy of approximately 176 kJ mol −1 , close to studies recent for pine wood that obtained 180 kJ mol −1 [ 31 ]. And, finally, the slow and complex destruction of lignin structures occurs with a peak activation energy of 455 kJ mol −1 at a conversion rate of 0.9, corresponding to the area of most difficult degradation of all experiences, similar to recent own studies [ 48 ].…”