The study of fast pyrolysis experiments of oil palm empty fruit bunches has been performed in a fluidized
fixed bed reactor. The highest bio-oil yield of 27 % was obtained at an optimum pyrolysis temperature of 500 qC
with particle size of 70 mesh. The higher treatment temperature has led to lower bio-oil yields. The produced biooil
contained a great range of functional groups of phenol, alcohols, ketones, aldehydes and carboxylic acids and
most functional groups show presence of oxygen. The high water content in combination with a high O/C atomic
ratio of produced bio-oil gives poor calorific values. Therefore, it needs to upgrade bio-oil products for future
research.