Kinetic study on the thermal degradation of heavy oil in presence of SBA-15 containing aluminum and cerium |
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Authors: | Larissa Cicianny Luz Ferreira de Araújo Taisa Cristine de Moura Dantas Aruzza Mabel de Morais Araújo Amanda Duarte Gondim Valter José Fernandes Júnior Antonio Souza de Araújo |
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Affiliation: | 1. Federal University of Rio Grande do Norte, Post Graduation Program in Science and Petroleum Engineering, Natal, RN, Brazil;2. Federal University of Rio Grande do Norte, Institute of Chemistry, Natal, RN, Brazil |
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Abstract: | In research for materials that can be applied in processing heavy oil (petroleum), this work proposes to synthesize mesoporous heterogeneous catalysts, type SBA-15, with the addition of cerium metal and aluminum. These catalysts were characterized by X-ray diffraction, scanning electron micrographs coupled to energy dispersive spectrometry, spectroscopy in the infrared region by Fourier transform, N2 adsorption and desorption and thermal analysis-thermogravimetry. Thermal tests were performed to evaluate the thermal and catalytic degradation process with a sample of heavy oil (°API = 14). Through the non-isothermal kinetic model of Ozawa Flynn Wall (OFW) some parameters for determining the apparent activation energy of decomposition were obtained. The petroleum with 12% of Ce5Al50SBA-15 showed a catalytic activity for this material. It has been seen that there was a decrease in the Ea in model free of the order from 89.0 to 104.9 kJ mol?1 in α = 50% ± 10%, and it was repeated from the first percentage until the last showing performance of Ce5Al50SBA-15 as a catalyst. |
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Keywords: | catalysis heavy oil kinetic model mesoporous materials thermal degradation |
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