[en] To produce biodiesel from the use of catalysts is necessary because help in getting better reaction yields and currently magnetic materials has gained prominence for this application. This study aimed to prepare the nanocatalyst Ni_0_,_5Zn_0_,_5Fe_2O_4 in laboratory scale, to evaluate their performance in methyl AND ethyl esterification using acidified soybean oil as raw material. The samples were synthesized by reaction in a combustion reactor with a production capacity of 200g / batch and characterized by XRD, TG and EDX. The catalytic tests took place at a temperature of 180 ° C / 1h, molar ratio 1:12, 2% nanocatalyst and analyzed by gas chromatography. Samples showed the major phase of the inverse spinel with an average crystallite size of 20.25 nm and traces of segregated phases of Fe_2O_3 and ZnO. The values of the detected oxides were 68.01% for Fe2O3, 16.57% for NiO and 15.28% for ZnO, values that are close to the calculated theoretical. The sample showed total mass loss equal to 6.5%, demonstrating its excellent thermal stability. The biodiesel conversion results were 84.11 and 73.74% for methyl ethyl route, respectively. Therefore, the synthesized material has catalytic potential in the tested reaction and could be a promising material for both assessed routes. (author)