Banca de QUALIFICAÇÃO: MÁRCIO RODRIGO OLIVEIRA DE SOUZA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MÁRCIO RODRIGO OLIVEIRA DE SOUZA
DATE: 13/12/2019
TIME: 09:00
LOCAL: LABORATÓRIO DE COMBUSTIVEIS E LUBRIFICANTES
TITLE:

THERMOCATALITIC DEGRADATION OF HEAVY OIL USING BIMODAL MESO MACROPOROSO SILICA

KEY WORDS:

Catalytic cracking, Thermogravimetric, Activation Energy, heavy oil

PAGES: 98
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

In the present work were synthesized and characterized meso-macroporous silica bimodal materials, using the methodology proposed by Santamaría et al. This material is promising in the area of catalysis, since it facilitates the mass transport process and reduces diffusion limitations, because in such materials, macropores act as channels facilitating the transport of adsorbed molecules in the mesopores. Making oil molecules interact with these active sites, thereby increasing the production of petroleum derivatives in the range of light and medium hydrocarbons. To evaluate the catalyst synthesis, these were characterized by the following techniques: thermogravimetric analysis (TGA), x-ray diffraction (XRD), Fourier transform infrared absorption spectroscopy (FT-IR), nitrogen absorption (BET), scanning electron microscopy (SEM) dispersive energy spectroscopy (EDS). For the purpose of analyzing the catalytic activity, 10% meso-macroporous bimodal catalyst was mixed with heavy oil with API = 17.2 as well as 10% aluminum-impregnated meso-macroporous bimodal (Al). After analyzing through thermogravimetric analysis the process of thermal and catalytic degradation of heavy oil and using the Ozawa Flynn Wall (OFW) kinetic model, the apparent activation energy of the decompositions was obtained. The results obtained from TG provided the final calcination temperature of the samples, the XRD showed the characteristic of a tetrahedral structure of (SiO₄) n, the BET provided surface area of 489 m² / g, and nitrogen adsorption isotherms characteristic of meso material. -structured, the mapping via EDS evidenced the presence of metals in the bimodal material, SEM of the calcined material, the characteristic honeycomb arrangement of the material was noted. From the kinetic study it was observed that the impregnated bimodal catalyst presented a low activation energy performing a great catalytic activity.

BANKING MEMBERS:
Presidente - 350509 - ANTONIO SOUZA DE ARAUJO
Interno - 1149328 - VALTER JOSE FERNANDES JUNIOR
Externa à Instituição - ANA CATARINA FERNANDES CORIOLANO - UnP