Solid/liquid- and vapor-phase interactions between cellulose- and lignin-derived pyrolysis products.
By Takashi Hosoya, H. Kawamoto, S. Saka. 2009
150 citations recorded by the source corpus.
Abstract Solid/liquid- and vapor-phase interactions between cellulose- and lignin (Japanese cedar milled wood lignin)-derived pyrolysis products were studied under the conditions of N 2 /600 °C/40–80 s. A dual-space closed ampoule reactor was used to eliminate the solid/liquid-phase interactions, and careful comparison of the resulting data with those of the pyrolysis of the mixed samples gave some insights into the solid/liquid- and vapor-phase interactions separately. With the solid/liquid-phase interactions, the tar yields from both cellulose and lignin increased with the decreasing yields of the char fractions in a short pyrolysis time of 40 s (primary pyrolysis stage). Most of the identified tar components from cellulose and lignin increased in their yields. The vapor-phase interactions were significant at a longer pyrolysis time of 80 s (secondary reaction stage) when the methoxyl groups of the lignin-derived volatiles were cleaved homolytically. The vapor-phase interactions accelerated the gas formation from the cellulose-derived volatiles with suppressing the vapor-phase char formation of the lignin-derived volatiles. The yields of methane and catechols from lignin also increased greatly instead of the formation of o -cresols. Most of these influences are explained with a proposed interaction mechanism, in which the cellulose-derived volatiles act as H-donors while the lignin-derived volatiles (radicals) act as H-acceptors.
Subfields: Biomedical Engineering, Food Science
View Paper: https://www.semanticscholar.org/paper/b61237c89f93f914418d39d55454fbafacfade14
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Citations in the corpus
- Cellulose, xylan and lignin interactions during pyrolysis of lignocellulosic biomass (2017, methodology): “from pyrolysis of cellulose powder and lignin extracted from Japanese cedar accelerated tar production, while reducing char and water formation[12].”
- Lignin pyrolysis reactions (2017, background): “Accordingly, the selectivity for the homolysis and rearrangement pathways can be controlled by changing the concentrations of H-acceptors/H-donors in the pyrolysis environment [93, 94].”