关键词:

气体放电, 等离子体, 玉米秸秆, 裂解反应

Abstract:

Corn stalk powder was processed in high pressure non-equilibrium plasma aiming to produce saccharide compounds by one step without oxidation and combustion.The results show that corn stalk powder can be splitted into saccharide compounds, such as monosaccharide and disaccharide etc., in discharged plasma without any pretreatment and any additives.The optimized splitting conditions were found to be: 70℃ of circumstance temperature, 90 kPa of pressure, 0.35 L•min^-1 of media gas N₂ flow, 0.1 L•min^-1 of saturated vapour flow, 3 kV of discharge voltage, 0.60 mm of discharge gap, and 60 min of discharge duration. Under these conditions, the conversion of corn stalk powder was 69.36% with the selectivity of 39.68%, and the yield of saccharide compounds was 40.16%.These results clearly illustrated that the production of saccharide compounds by the splitting of corn stalk powder is possible without any acid or alkali or any other complicated pretreatment, and the process can proceed even with no needs of high temperature and high pressure.

Key words:

气体放电, 等离子体, 玉米秸秆, 裂解反应