CATALYTIC PYROLYSIS AND KINETICS OF LIGNIN WITH THERMOGRAVIMETRY

摘要

The results indicated that both sodium carbonate or POTASSIUM carbonate as the catalyst have obvious effect on iignin pyrolysis, The DTG curve is altered greatly, from one peak for pure lignin pyrolysis to two peaks for the case with catalyst addition. Catalyst can improve the maximum rate of weight loss, and make peak on the DTG curve move towards lower temperature range. The pyrolysis process for Iignin can be described with two first-order consecutive reactions when Coats-Redfern method was applied to.