Catalisador Ni0,5Zn0,5Fe2O4 e seu desempenho na produção de biodiesel utilizando óleo de fritura.

Abstract

This work proposes to synthesize a Ni0.5Zn0.5Fe2O4 catalyst obtained by the pilot scale reaction for the evaluation of the performance in biodiesel production by transesterification reaction and simultaneous esterification (TES) of the oil in several reactional ways. The samples were bathed in 200 g of the product, together with a heat treatment of 650, 700 and 800 oC at a rate of 30 ° C / min and firing level of 5 min. During the probes the temperature and the combustion time were measured, and the products of the rocks were characterized by DRX, BET, MEV, particle size analysis, density and magnetic measurements. The catalytic testis was investigated as experimental results, with temperatures (140, 180 and 200 ºC), type (calcined and without limestone), amount of catalyst (2, 3 and 5%), reaction time (1 and 2 h ) and alcohol route (methyl and ethyl). The reacted products were characterized by gas chromatography, kinematic viscosity, acidity index and FTIR. The results of the analyzes revealed that the catalysts were directed to the phase of interest, and the levels of zinc and iron were quantified during the refinement by Rietveld. The BET results indicated a formation of mesoporous material and a 28% reduction of the surface area for a calcined sample. As the micrographs of MEV allowed to perceive as the morphology units in agglomerates in the form of irregular blocks of fragile aspect, with a great distribution of particle sizes. They presented the characteristic of soft magnetic material, with saturation magnetization values of approximately 6 and 59 emu / g, one of the resources that reveal the presence of natural resources. The catalysts were also for the TES keys of the frying oil, whose conversion values in biodiesel ranged from 88.93 to 95.20% for ethyl spin and from 73.30 to 84.10% for a methyl. Therefore, from the obtained results, to validate the Ni0.5Zn0.5Fe2O4 rust, to produce with the pilot scale production differential, as a potential heterogeneous catalyst, for the production of biodiesel.