Khatiya WeerasaiVerawat ChampredaChularat SakdaronnarongArtiwan ShotiprukNavadol LaosiripojanaChulalongkorn UniversityMahidol UniversityThailand National Center for Genetic Engineering and BiotechnologyKing Mongkut s University of Technology Thonburi2019-08-232019-08-232018-07-01Food and Bioproducts Processing. Vol.110, (2018), 136-144096030852-s2.0-85048183620https://repository.li.mahidol.ac.th/handle/20.500.14594/44728© 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.Mahidol UniversityAgricultural and Biological SciencesBiochemistry, Genetics and Molecular BiologyChemical EngineeringArticleSCOPUS10.1016/j.fbp.2018.05.005