Gasification of Acetic Acid as a Model Oxygenate from Bio-Oil by Microwave Heating

Acetic acid was chosen as a model compound of fast pyrolysis bio-oil, A series of Ni-based catalyst were prepared for gasification of acetic acid in a fixed bed by microwave heating. The experimental results indicate that the additives of MgO and CoO to the Ni/Dolomite can improve the catalyst selectivity obviously, at the same time, Ni/Dolomite catalyst can reduce the carbon deposition rate efficiently. Here we have conducted the gasification of acetic acid with Ni/MgO- CoO-Dolomite and H₂,CH₄,CO,CO₂ as indicator in a fixed bed by microwave heating for the purpose of obtaining some knowledge of its behavior under different conditions. The effects of the reactor temperature, feeding rate, molar ratio of H₂O/C on yields of gas and composition of gaseous product have been investigated and the liquid product has been qualitatively analyzed. the optimum conditions is microwave temperature 750°C-900°C,H₂O to carbon ratio 4-7 and feeding rate 2.5-3.2ml/min.