A summative kinetic model of beech wood decomposition for the pseudo- components hemicellulose (two steps), cellulose (one step) and lignin (two steps) is formulated and applied for the predictions of differential thermogravimetric (DTG) and differential scanning calorimeter (DSC) measurements. It is found that pseudo-cellulose decomposition is a globally endothermic process with a reaction heat of 528J/g (of volatile evolved). Pseudohemicellulose decomposition also takes place endothermally with reaction heats 321 and 226J/g for the two reaction steps. Instead the two-step pseudo-lignin decomposition occurs with remarkable exothermicity corresponding to -728 and -635J/g
Multi-step kinetics of wood pyrolysis: estimation of reaction heats / Branca, C; Galgano, A; Di Blasi, C. - (2017). (Intervento presentato al convegno 40th Meeting of the Italian Section of The Combustion Institute tenutosi a Roma nel 7-9 Giugno 2017) [10.4405/39proci2017.I1].
Multi-step kinetics of wood pyrolysis: estimation of reaction heats
Galgano A;
2017
Abstract
A summative kinetic model of beech wood decomposition for the pseudo- components hemicellulose (two steps), cellulose (one step) and lignin (two steps) is formulated and applied for the predictions of differential thermogravimetric (DTG) and differential scanning calorimeter (DSC) measurements. It is found that pseudo-cellulose decomposition is a globally endothermic process with a reaction heat of 528J/g (of volatile evolved). Pseudohemicellulose decomposition also takes place endothermally with reaction heats 321 and 226J/g for the two reaction steps. Instead the two-step pseudo-lignin decomposition occurs with remarkable exothermicity corresponding to -728 and -635J/gI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
