Peer-Reviewed Journal Details
Mandatory Fields
Dussan, K,Dooley, S,Monaghan, RFD
2019
April
Proceedings Of The Combustion Institute
A model of the chemical composition and pyrolysis kinetics of lignin
Published
Altmetric: 5WOS: 3 ()
Optional Fields
Lignin Pyrolysis Lignocellulosic biomass Reaction kinetics Kinetic model BOND-DISSOCIATION ENTHALPIES FAST BIOMASS PYROLYSIS QUANTITATIVE C-13 NMR PHASE REACTIONS SLOW PYROLYSIS WOOD MECHANISM TRANSFORMATION DECOMPOSITION CHEMISTRY
37
2697
2704
This study presents a novel approach for the chemical representation of lignin for modelling the reaction kinetics of lignin in lignocellulosic biomass. This methodology relies on the definition of dimeric pseudo-components containing phenolic functionalities, i.e., p-hydroxyphenyl, guaiacyl and syringyl groups, as measured in real biomass and native lignin through wet chemistry and spectroscopic techniques. The reactivities of the lignin pseudo-components are modelled through a series of lumped unidirectional reactions. whose product formation and reaction rate constants are optimised to replicate a comprehensive experimental dataset gathered from several works available in the literature. The new kinetic model contributes to the state-of-the-art by providing a more accurate depiction of the conversion rates. selectivity of char vs. volatiles, and aromatic composition in condensable products in line with the inherent reactivity of lignin functionalities and the empirical observations of lignin depolymerisation and thermal degradation at low (<1 K/s) and high heating rates (>50 K/s). (C) 2018 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
10.1016/j.proci.2018.05.149
Grant Details
Publication Themes