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dc.contributor.authorYu, Yun
dc.contributor.authorChua, Yee Wen
dc.contributor.authorWu, Hongwei
dc.identifier.citationYu, Y. and Chua, Y. and Wu, H. 2016. Characterization of Pyrolytic Sugars in Bio-Oil Produced from Biomass Fast Pyrolysis. Energy & Fuels. 30: pp. 4145-4149.

This study characterizes the pyrolytic sugars in three bio-oils (with a total sugar content range of 55.6–69.2 mg g–1 bio-oil) produced from biomass fast pyrolysis by high performance anion exchange chromatography with pulsed amperometric detection (HPAEC-PAD) and two-dimensional 1H–13C heteronuclear single-quantum correlation–nuclear magnetic resonance (HSQC-NMR). Depending on bio-oil sample, glucose (mainly derived from cellulose) contributes ~67–79 wt % of total pyrolytic sugars in the bio-oil, and the rest of the sugars are derived from hemicellulose. The majority (>96%) of pyrolytic sugars are present in the water-soluble fraction of bio-oil, mainly in the form of cellulose-derived anhydrosugars such as levoglucosan and cellobiosan. A small portion of hemicellulose-derived sugar structures are also found in the water-soluble fraction of bio-oil. Unlike six-carbon sugars (glucose, galactose, and mannose) which are mainly present as anhydrosugars (i.e., ~ 79–86% on a carbon basis for glucose), a large portion of five-carbon sugars (xylose and arabinose) in the water-soluble fraction of bio-oil are present as monomer sugars (i.e., ~ 24–39% on a carbon basis for arabinose and ~32–42% on a carbon basis for xylose). The results suggest that the formation of anhydrosugars from hemicellulose pyrolysis is difficult for five-carbon sugars and the hydrolysis of hemicellulose can be catalyzed by the organic acids produced during pyrolysis. A minor portion (<4%) of sugar structures also exists in the water-insoluble fraction of bio-oil, possibly formed via thermal ejection mechanism from hemicellulose components connected to lignin structures.

dc.publisherAmerican Chemical Society
dc.titleCharacterization of Pyrolytic Sugars in Bio-Oil Produced from Biomass Fast Pyrolysis
dc.typeJournal Article
dcterms.source.titleEnergy & Fuels
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

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