Kinetics of In-Situ Catalytic Pyrolysis of Rice Husk Pellets Using a Multi-Component Kinetics Model

Ash-based catalysts, as low-cost materials, are applicable in biomass pyrolysis and play a role lowering the activation energy. This study enriched insights of different method catalyst addition into catalytic pyrolysis. The rice husk ash pellets allows for better solid-solid contact between catalyst, since common methods were only solid mixing. research aimed to investigate thermal characteristics kinetics components (hemicellulose, cellulose, lignin) in-situ with ash. three-independent parallel reaction model was used calculate parameters based on thermogravimetric analysis conducted at 303-873 K various heating rates (5, 10, 20 K/min) ratios (10:0, 10:1, 10:2). thermogram shows that divided two stages. Stage 1, ranging from 510-650 K, represented decomposition hemicellulose occurring faster high mass loss, while 2, starting around 650 lignin decomposition, more slowly low loss. activity apparent temperatures, where cellulose dominant. Activation energy, representation each component, not always lower However, average energy decreased increasing ratios. slowed but accelerated lignin. Copyright © 2023 by Authors, Published BCREC Group. is an open access article under CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).