Key words: monohydric alcohols, acetic acid, lignin, stability, supercritical state
Thermal stability under supercritical conditions of methanol, ethanol, 2-propanol and
acetic acid, most suitable as solvents in depolymerization of technical lignins to lowmolecular
aromatic compounds, was studied. Among them at 450 °C 2-propanol is the
most stable. Acetic acid is almost completely decomposed within 4 h, while the addition
of water significantly increases its thermal stability. Chemical composition of gaseous
and liquid products of thermal decomposition of solvents was studied using gas
chromatography-mass spectrometry.
doi:10.1134/S1990793119070108