In most tropical developing countries, the concern caused by agricultural overproduction is sometime enormous. In order to find a form of recovery of surplus production in Cote d'Ivoire, research has been undertaken to use vegetable oils as alternative to diesel. This work focused in the way of their chemical conversion related to campaign pyrolysis oils of palm, coconut, groundnut, cotton, and cabbage carried out between 350 and 600 °C in atmospheric pressure. A silica support is used in co-catalysis either with water or with methylcyclohexane. Liquid hydrocarbon yields reach 86%. A comparative study of the influence of homogeneous catalysts on the pyrolysis products was conducted and the contribution of the source of the starting triglycerides was highlighted. Recombinant esters were revealed as reaction intermediates.Keywords: continuous pyrolysis, hydrocarbons, mass balance; esters recombination.