Journal
CARBOHYDRATE POLYMERS
Volume 82, Issue 1, Pages 39-45Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.04.018
Keywords
Cellulose; Hemicellulose; TGA; Fast pyrolysis; CO; CO2; Tar; Char
Categories
Funding
- Innovation China UK
- UK Engineering and Physical Sciences Research Council [EP/G034281/1]
- EPSRC [EP/G034281/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G034281/1] Funding Source: researchfish
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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 degrees C), while hemicellulose works as an important precursor for the char production (similar to 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. (C) 2010 Elsevier Ltd. All rights reserved.
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