SUBCRITICAL WATER EXPERIMENTS WITH LIGNIN MODEL COMPOUND SYRINGALDEHYDE AND NITROGEN, HYDROGEN, CARBON MONOXIDE AND CARBON DIOXIDE GASES

摘要

Biofuel technologies using lignocellulosic sources may only be cost effective if the lignin byproduct is upgraded to high-value transportation fuels or other value-added products. Experiments using subcritical H2O (365°C) and various industrial gases (500 psi, cold pressure of N2, H2, CO or CO2) have been considered previously for the conversion of Organosolv lignin into value-added products.1-3 The findings indicated that subcritical H2O (365°C) can be used to depolymerize lignin into GC amenable compounds with or without added gas pressures, though adding gas will further modify the types of products generated.