Modified local carbonate mineral as deoxygenated catalyst for biofuel production via catalytic pyrolysis of waste cooking oil

Abstract

Malaysian Dolomite with 5% dispersion of nickel has shown potential deoxygenation catalyst due to high capacity in removing oxygen compound and produce high quality of biofuel with desirable lighter hydrocarbon (C8−C24). The modified dolomite catalyst showed enhanced physicochemical properties by surface area increment and average pore diameters reduction. The performance of this modified catalyst was compared with two commercial catalysts in catalytic pyrolysis of Waste Cooking Oil. The liquid product showed similar chemical composition of biofuel in the range of gasoline, kerosene and diesel fuel. Furthermore, this modified Malaysian Dolomite catalyst showed high reactivity with 68.0 wt% of waste cooking oil conversion, 36.4 wt% of biofuel generated, 78.0% yield in C8−C24 of pyrolysis oil and 55.2% selectivity in biodiesel. Thus, local modified calcined carbonated material has a potential to be as a deoxygenated catalyst in converting waste cooking oil into biofuel.