Abstract
In order to investigate the decomposition behavior of hemicellulose, xylan was chosen as the representative of hemicellulose to study the fast pyrolysis on the combination system of analytical pyrolyzer and gas chromatograph coupled with mass spectrometer(Py-GC/MS). The main condensable products of xylan pyrolysis consisted of acids, aldehydes, and ketones; while gas products contained CO2, CO, CH4 and H2. Acetic acid and furfural were the most abundant products with the highest contents of 20.11% and 20.24% respectively. While furfural and acetic acid were formed competitively with residence time and temperature increases, the distribution of xylan pyrolysis products did not vary with the residence time and temperature, while the total content of several kinds of products changed a lot. According to the analysis of experimental data, a reaction pathway of xylan decomposition was deduced so as to illustrate the formation mechanism of main products.
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Supported by the National Natural Science Foundation of China(No.51276166), the Zhejiang Provincial Natural Science Foundation, China(No.R1110089), the National Science and Technology Supporting Plan Through Contract, China (No.2011BAD22B07), the Program for New Century Excellent Talents in University, China(No.NCET-10-0741) and the Zhejiang Provincial Key Science and Technology Innovation Team Program, China(No.2009R50012).
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Wang, Sr., Liang, T., Ru, B. et al. Mechanism of xylan pyrolysis by Py-GC/MS. Chem. Res. Chin. Univ. 29, 782–787 (2013). https://doi.org/10.1007/s40242-013-2447-6
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DOI: https://doi.org/10.1007/s40242-013-2447-6