| 초록 |
Methanol is considered a good hydrogen carrier because it is relatively cheap and convenient to transport, store and use. Furthermore methanol can be produced from lignocellulosic biomass via gasification followed by catalytic synthesis. In this work, methanol gasification characteristics were compared over Ni-Y/AC catalyst in atmospheric steam and supercritical water at 250 bar. The effect of major parameters such as temperature, W/M molar ratio and WHSV on gas production rate and gas composition were examined in both aqueous phases. Steam gasification of methanol showed little sensitivity to catalyst bed temperature of 450~650oC, while supercritical water gasification (SCWG) was significantly affected by the temperature with observation of an abrupt increase above 580oC. Gas composition was also affected by W/M ratio with higher hydrogen content at higher W/M ratio. |
