FUEL, vol.85, no.12-13, pp.1851-1859, 2006 (SCI-Expanded)
Pyrolysis of Euphorbia rigida and sesame stalk biomass samples with two selected commercial catalyst, namely DHC-32 and HC-K 1.3Q, have been conducted in a fixed-bed reactor. The effect of different catalysts and their ratio (5, 10 and 20% w/w) and pyrolysis temperature (500 and 750 degrees C) on the pyrolysis product yields were investigated and the obtained results were compared with similar experiments without catalyst. Bio-oil yield was increased comparing with non-catalytic experiments, at final pyrolysis temperature of 500 degrees C for both biomass samples and catalysts. In the catalytic experiments; when the temperature reached to 750 degrees C, although bio-oil product yield was reduced, the gas product yield was increased comparing with non-catalytic experiments.