Publication: Hydrolysis of eucalyptus wood chips under hot compressed water in the presence of sulfonated carbon-based catalysts
Issued Date
2018-07-01
Resource Type
ISSN
09603085
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2-s2.0-85048183620
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Mahidol University
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SCOPUS
Bibliographic Citation
Food and Bioproducts Processing. Vol.110, (2018), 136-144
Suggested Citation
Khatiya Weerasai, Verawat Champreda, Chularat Sakdaronnarong, Artiwan Shotipruk, Navadol Laosiripojana Hydrolysis of eucalyptus wood chips under hot compressed water in the presence of sulfonated carbon-based catalysts. Food and Bioproducts Processing. Vol.110, (2018), 136-144. doi:10.1016/j.fbp.2018.05.005 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/44728
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Title
Hydrolysis of eucalyptus wood chips under hot compressed water in the presence of sulfonated carbon-based catalysts
Abstract
© 2018 Institution of Chemical Engineers Hydrolysis of lignocellulosic biomass to sugars and derivatives is a key step in production of biofuels and commodity chemicals in a biorefinery. In this study, catalytic hydrolysis of eucalyptus chips with solid sulfonated carbon-based catalysts prepared from three different carbon precursors (sucrose, glucose, and xylose) was studied under hot-compressed water at 150–250 °C with reaction time of 1–10 min. Increasing temperature up to 200 °C led to higher sugar yields from cellulose and hemicellulose while further increase in temperature caused higher formation of sugar degradation by-products. Sulfonated-sucrose (SO 3 H-Suc) showed the greatest performance on sugar production compared to other catalysts with less formation of furans and anhydroglucose; its high catalytic activity was related to its high acid site density as proven by NH 3 -TPD measurement. Size reduction and chemical pretreatment of the biomass were found to enhance the hydrolysis yield and reaction selectivity. The highest sugar yield of 40.7% comprising glucose, fructose, and xylose was achieved using 5% (w/w) SO 3 H-Suc at 200 °C for 5 min with milled biomass (60–100 μm) pretreated by alkaline oxidation. The work provides an alternative catalytic process for hydrolysis of lignocellulose in biomass industry.