Banca de QUALIFICAÇÃO: LARISSA CICIANNY LUZ FERREIRA DE ARAUJO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LARISSA CICIANNY LUZ FERREIRA DE ARAUJO
DATA : 27/06/2016
HORA: 09:00
LOCAL: Sala de Treinamento do Nupe-er
TÍTULO:

SYNTHESIS, CHARACTERIZATION AND CATALYTIC APPLICATION OF STRUCTURED MESOPOROUS MATERIALS - CE_XAL₅SBA-15 FOR THERMAL AND CATALYTIC DEGRADATION OF HEAVY OIL

PALAVRAS-CHAVES:

Environment; Catalysis; Mesoporous materials (SBA-15 and SBA-15-M); heavy oil; Thermogravimetry; Flynn-Wall

PÁGINAS: 120
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Química
RESUMO:

Given the context of new oil fields discovered, petrochemicals has improved the processing of materials obtained in this study especially heavy oil produced. Because of this refining, research is essential for the improvement and development of new materials. Nanomaterials (catalysts) are microporous and mesoporous considered promising for obtaining light oil products from heavy oil fractions and adsorbents for environmental protection. The mesoporous materials discovered by researchers at the University of California-Santa Barbara- USA - SBA-15, having pores of diameter ranging from 2 to 30 nm and wall thickness of 3.1 to 6.4 nm, making these promising materials in the area catalysis, particularly for refining oil (catalytic cracking), as their mesopores facilitate access of the constituent molecules of the heavy oil. The doctoral work reported here was dedicated to synthesize by hydrothermal method, calcination, characterization of mesoporous heterogeneous catalysts, the SBA-15 type with addition of cerium and aluminum metals, evaluating their activity and selectivity in the thermal degradation of heavy oil. Samples of nanostructured materials were characterized by thermal gravimetric analysis (TG / DTG), X-ray diffraction (XRD), scanning electron microscopy (SEM), fluorescence spectroscopy, X-ray (XRF) spectroscopy, absorption in the infrared region Fourier transform (FT-IR) and nitrogen adsorption (BET). The characterization showed that the synthesized materials resulted in a nanostructured catalyst and ordered pore diameter and surface area according to the literature. In order to check the catalytic activity of the same, we used a heavy oil sample (° API = 14), supplied by Petrobras, is performing through thermogravimetry the process of thermal and catalytic degradation of the oil. Upon the obtained curves, it was observed a reduction in the opening of oil decomposition catalytic process temperature. The kinetic model proposed by Flynn- Wall yielded some parameters to determine the apparent activation energy of decomposition, being evidenced the efficiency of mesoporous materials, since there was a decrease in the activation energy for the reactions using the materials obtained.

MEMBROS DA BANCA:
Externo ao Programa - 2140818 - AMANDA DUARTE GONDIM
Presidente - 350509 - ANTONIO SOUZA DE ARAUJO
Externo ao Programa - 1011255 - ARUZZA MABEL DE MORAIS ARAUJO