under atmospheric pressure with zeolites, Al203 and Mgo as a catalyst 114-17 under which the thermal decomposition is predominant. First, triglycerides are decomposed to fatty acids, ketones, aldehydes and esters 18). These products undergo secondary cracking to form short and long chain paraffins and olefins with co, CO2, H20 and alcohols by breaking c-o and C-c bonds via decarboxylation and decarbonylation. However, this process makes various hydrocarbons having wide range of carbon numbers with olefins and aromatics.