期刊
FRONTIERS IN ENERGY RESEARCH
卷 6, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fenrg.2018.00013
关键词
ionic liquid; biomass; lignin; cellulose; hemicellulose; P-31 NMR
资金
- National Science Foundation of China [51706044]
- Natural Science Foundation of the Jiangsu of China [BK20170666]
- Recruitment Program for Young Professionals in China
In this study, the dissolution of biomass components-cellulose, hemicellulose, and lignin, and two whole biomasses- switchgrass and poplar in a pyridine based ionic liquid at a low temperature-50 degrees C has been examined, which will provide an opportunity to explore the original structures of biomass components. The following phosphitylation, and P-31 NMR measurement could provide quantitative results for various hydroxyl groups, including aliphatic, condensed phenolic, guaiacyl phenolic, p-hydroxyl phenyl and carboxylic hydroxyl groups in the biomass components, and whole biomass. By employing various biomass model compounds (glucose, cellotriose, and cellohexose), artificial mixtures of biomass components (cellulose, hemicellulose, and lignin), and computational simulation for the assignments by using density functional theory calculation in Gaussian, reliability and accuracy of this method have been examined as well, which indicated that this method is a reliable and accurate way to quantitatively characterize five different types of hydroxyl groups in biomass and its components.
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