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Renewable biodiesel with a high content of n-C 17  alkanes was prepared through the catalytic hydrodeoxygenation of oleic acid under optimum conditions of temperature, reaction time and weight percentage of Ni deposited in γ-Al 2 O 3 . The hydrotreated vegetable oil (HVO) was blended with petrodiesel (20 % and 40 % of HVO) to evaluate its behaviour in a diesel engine. Comparative studies of power and emission of atmospheric pollutants such as NO x , CO, HC and smoke were evaluated under prepared blends and petrodiesel. The presence of HVO biodiesel at full load generated a slight decrease in power compared to petrodiesel; however, the decrease in emission of pollutants when using the blends containing HVO was significant. In the case of 40 % HVO were able to reduce more of 20 % of CO and HC emissions, and more than 40 % reduction in smoke when compared with petrodiesel. The NO x  emissions of the blends with HVO had a significant slightly decrease. Further, the properties of Ni/γ-Al 2 O 3  catalysts are justified by the results of EDS characterization, surface area (SBET), XRD, XPS, HR-TEM and it’s capacity to produce biodiesel.

Controlled Evaluation in a Diesel Engine of the Biofuel Obtained with Ni/γ-Al 2 O 3 Nanoparticles in the Hydrodeoxygenation of Oleic Acid