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The thermal performance of the polysaccharides extracted from hardwood: Cellulose and hemicelluloses

Shen, DK, Gu, S and Bridgwater, AV (2010) The thermal performance of the polysaccharides extracted from hardwood: Cellulose and hemicelluloses Carbohydrate Polymers, 82 (1, 2 A). pp. 39-45.

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Abstract

The pyrolytic behaviour of individual component in biomass needs to be understood to gain insight into the mechanism of biomass pyrolysis. A comparative study on the pyrolysis of cellulose (hexose-based polysaccharides) and hemicallulose (pentose-based polysaccharides) is performed by two sets of experiments including TG analysis and Py-GC–MS/FTIR. The samples of these two polysaccharide components are thermally decomposed in TGA at the heating rate of 5 and 60 K/min to demonstrate the different characteristics of mass loss stage(s) between them. The yield of pyrolytic products is examined by a fluidized-bed fast pyrolysis unit. The experiment confirms that cellulose mainly contributes to bio-oil production (reaching the maximum of 72% at 580 °C), while hemicellulose works as an important precursor for the char production (∼25%). The compounds in the gaseous mixture (CO and CO2) and bio-oil (levoglucosan, furfural, aldehyde, acetone and acetic acid) are further characterized by GC–MS for cellulose and GC-FTIR for hemicellulose, and their formations are investigated thoroughly.

Item Type: Article
Authors :
AuthorsEmailORCID
Shen, DKUNSPECIFIEDUNSPECIFIED
Gu, SUNSPECIFIEDUNSPECIFIED
Bridgwater, AVUNSPECIFIEDUNSPECIFIED
Date : 18 April 2010
Funders : Innovation China UK, UK Engineering and Physical Sciences Research Council (EPSRC)
Identification Number : https://doi.org/10.1016/j.carbpol.2010.04.018
Copyright Disclaimer : Copyright © 2016 Elsevier B.V. or its licensors or contributors.
Uncontrolled Keywords : Cellulose, Hemicellulose, TGA, Fast pyrolysis, CO, CO2, Tar, Char
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 11:00
Last Modified : 28 Mar 2017 11:00
URI: http://epubs.surrey.ac.uk/id/eprint/810605

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