The critical problem arises from the fossil fuels which has stimulated recent interests in alternative sources for petroleum-based fuel.An alternative fuel should be technically feasible,readily available,environment acceptable and techno-economically competitive.The new generation of renewable fuel is known as green diesel.Green diesel is composed of long chain hydrocarbons that can be prepared from DO(deoxygenation)of palm oil.The feedstock used for the production of green diesel mainly comes from edible vegetable oil which is highly available in most of the countries around the world.However,the compotation between food and fuel economies towards the same oil resources may bring global imbalance to the food supply and demand market.The focus on this research is to produce green diesel using edible feedstock via heterogeneous catalysed DO reaction.