Conversão do óleo de dendê utilizando material mesoporoso para obtenção de bioquerosene

Abstract

The incentive about use of renewable energies is a challenge proposed every year due high greenhouse emissions, mainly because oil derivates. The difficulty of obtaining biofuel without oxygen compounds is a problem to aeronautical industry, due to stringent standards. There are some processes for biokerosene production, but three processes usually applied are gasification, hydroprocessing and pyrolysis. This paper aims to evaluate a catalysts’ potential Al-MCM-41 e Ni/Al-MCM-41 in biokerosene production through fast pyrolysis of palm oil. The mesoporous material Al-MCM-41 has been synthesized through hydrothermal route while the mesoporous material Ni/Al-MCM-41 has been synthesized through wet incorporation. The mesoporous materials has been studied by technics of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Energy-dispersive spectroscopy (EDS) and thermal gravimetric analysis (TG/DTG). The palm oil has been studied by acidity level, oxidation temperature (OT), Fourier transform infrared spectroscopy (FTIR) and Rancimat. The catalysts showed one-dimensional hexagonal formation, typical of MCM-41. The thermal pyrolysis showed high content of compounds with high molecular weight and its application is unviable for biokerosene production. The thermocatalytic pyrolysis with Al-MCM-41 showed larger selectivity than thermal pyrolysis, with 63% of hydrocarbons on C9-C15, The thermocatalytic pyrolysis with Ni/Al-MCM-41 showed high deoxygenation with 78% of total hydrocarbons, in addition to 46% of hydrocarbons on C9-C15, evidencing the catalysts’ potential for biokerosene production.