Investigation into the lignin decomposition mechanism by analysis of the pyrolysis product of Pinus radiata

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Title
Investigation into the lignin decomposition mechanism by analysis of the pyrolysis product of Pinus radiata
Author(s)
Y M Kim; J Jae; S Myung; Bong Hyun Sung; J I Dong; Y K Park
Bibliographic Citation
Bioresource Technology, vol. 219, pp. 371-377
Publication Year
2016
Abstract
Lignin pyrolysis chemistry was investigated via the analysis of the products obtained from the fast pyrolysis of a pine wood at different temperatures. Methoxy phenols, such as guaiacols and eugenols, were produced mainly at 375 and 475 °C, while non-methoxy phenols, such as alkyl phenols and pyrocatechols were dominant at 525 and 575 °C. At 575 °C, aromatic hydrocarbons were formed together with larger amounts of light hydrocarbon gases. When the temperature was increased from 375 and 475 °C, the yield of pyrolytic lignin was increased, whereas its average molecular weight was decreased. At 525 °C, smaller molecular pyrolytic lignin with a maximum concentration of phenolic hydroxyl groups was produced due to the increased secondary cracking of the reaction intermediates. On the other hand, at 575 °C, larger molecular pyrolytic lignin with smaller amounts of phenolic hydroxyl groups was produced due to the increased condensation activity of the pyrolysis reaction intermediates
Keyword
GPCLigninNMRPyrolysis mechanism
ISSN
0960-8524
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.biortech.2016.08.001
Type
Article
Appears in Collections:
Division of Biomaterials Research > Synthetic Biology and Bioengineering Research Center > 1. Journal Articles
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