Cellulose decomposition behavior in Hot-Compressed-Water (HCW) was investigated. Rate of glucose production was increased according to HCW temperature, however the yield of glucose was peaked about 50% regardless of the processing temperature. This phenomena was occurred by secondary decomposition of hydrolyzate to low molecular weight compounds such as furfural, 5-hydroxymethylfurfural (HMF) and others as seen in acid hydrolysis. Considering the conversion of lignocellulosic biomass to fermentation resources, it's important to grasp these hydrolysis and secondary decomposition behaviors. So, the reaction kinetics analysis was carried out for the data obtained by HCW treatment of cellulose and relating saccha-rides, then, it is clarified that the rate constant of cellulose decomposition was slightly surpassed that of glucose pyrolysis.
