ABSTRACT
The development of biofuels resources has received great attention because of the global environmental concern and the exhaustion of the fossil fuel resources. Hydrocracking of waste cooking oils to obtain biofuel is a potential processing route. This study was investigated the preparation of catalyst Co/Zn-Al₂O₄ Nano particles and then use it in biodiesel fuel synthesis by hydro catalytic cracking of waste cooking oil (WCO). The hydrocracking was done in a high-pressure catalyst activity testing unit. This catalyst was characterized by X-ray diffraction (XRD), the Brunauer-Emmett-Teller (BET), Fourier transform infrared (FTIR), High-resolution transmission electron microscopy (HRTEM) analysis. The parameters affecting the cracking process, such as temperature, hydrogen pressure and feed rate of WCO, were optimized. The cracked products were characterized by fractional distillation. The results of fractional distillation show good catalyst higher selective activity to bio hydrocarbon in rang of naphtha, kerosene and diesel compared to fractional distillation of WCO. Blend of 50% biodiesel was done with fossil diesel fuel and characterized as a drop in B50 biodiesel fuel then characterized according to the different ASTM methods.