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It is called «hydrotreating» the process comprising the exposure of a raw material to high temperature and high hydrogen pressure in presence of a convenient catalyst. Such process has gained interest in the feld of the renewable energies because it can be used to convert biomasses from dierent origin into biofuels. Particularly, if an edible fat or oil is destined to this type of process a blend of parafns and isoparafns suitable for the substitution of fossil diesel fuels can be obtained. Tis type of liquid biofuels has been called «bio-gasoil» (or «greendiesel»), and is a renewable alternative to gasoil with a higher quality than traditional biodiesel. In this work high oleic sunower oil was processed in a batch reactor at 350 °C and 100 bar H2, using three dierent catalyst: NiMo/Al2O3, PtO2 and Pd/Al2O3. Afer 4 hs of reaction period yields of 89, 93 y 98 % (respectively) were achieved, determined as hydrocarbon concentration. Product composition suggests that conversion occurred through a complex mechanism involving hydrodeoxigenation, hydrodecarbonilation, hydrodecarboxilation and cracking.

Hidrotratamiento catalítico de aceites vegetales para la producción de biocombustibles líquidos