Title:
Supercritical Water Gasification of Phenol and Benzene as Lignin Biomass Model Compound: Detailed Reaction Pathways and Kinetics
Author(s):
Yong, T. L.-K., Matsumura, Y.
Document(s):
Paper
Abstract:
The effect of temperature (370–450 °C) and residence time (0.5–100 s) on phenol and benzene decomposition in supercritical water (SCW) at pressure of 25 MPa was investigated. Because of the complexity of the lignin biopolymer, studying simple model compounds such as phenol and benzene is an essential preliminary step in elucidating the primary mechanism of char and gas formation. Based on the deduced mechanism, we proposed reaction pathways for the decomposition of phenol and benzene in SCW to determine a quantitative detailed chemical kinetics modeling. The activation energy of benzene decomposition (91.16 kJ/mol) in SCW is much higher than phenol (53.06 kJ/mol) under similar conditions. This emphasized the importance of substituent group (hydroxyl group) in the benzene ring structure to enhance the decomposition rate that ultimately lead to higher char formations.
Keywords:
biomass, hydrogasification, lignin, char
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Gasification for synthesis gas production
Event:
21st European Biomass Conference and Exhibition
Session:
2CV.3.37
Pages:
851 - 853
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-2CV.3.37
Price:
FREE
