Abstract
Glucose is one of the dominant components in the lignocellulosic biomass. Hydrothermal decomposition of glucose is conducted at 673 K in the presence of acid (HCl) or base (NaOH) catalysts, which represent to the addition of H^+ and OH^-. The glucose solution (1.5 wt%) is gasified with catalyst 0.01 M (at room temperature) in a tubular reactor at 25 MPa. The addition of H^+ in hydrothermal gasification of glucose enhanced the formation of furfural and 5-HMF, which are ionic reactions. On the other hand, the addition of OH^- slightly promoted the gasification reaction, which is a radical reaction. The kinetic parameters of glucose decomposition pathways are also determined by assuming the first-order reaction.
