Abstract: The liquefaction of wood powder in supercritical methanol was investigated under different reaction conditions. The results indicate that the liquefaction, decomposition and gasification rate of wood powder were affected by the ratio of methanol to wood powder, reaction temperature and time, as well as type and amount of catalyst. At the best conditions: methanol to wood powder ratio of 4.5, 320℃, reaction time 1 h, and NaOH as catalyst, the liquefaction rate achieves 43.3%.

Key words: bio-mass, high pressure liquefaction, supercritical fluid, methanol