In this study, pyrolysis of A. pallida stems was performed in a
fixed-bed reactor with and without catalyst for production of
bio-char and bio-oil. The bio-oils were complex mixtures of
monoaromatics, aliphatics, oxygenated, nitrogenated and polycylic
compounds. Zinc chloride and tincal had greater effects in improving
quality of bio-oils. The composition of bio-oils was dominated
by phenolics and oxygenated compounds. The produced bio-oils
had higher calorific values than the raw material. The elemental,
TGA and GC–MS results of bio-oils indicate that A. pallida stems
can be used as potential feedstock for production of bio-oils with
high HHV or valuable chemicals.