Banca de DEFESA: MÁRCIO RODRIGO OLIVEIRA DE SOUZA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MÁRCIO RODRIGO OLIVEIRA DE SOUZA
DATE: 21/02/2020
TIME: 09:00
LOCAL: Auditório do CCET/UFRN
TITLE:

THERMOCATALYTIC DEGRADATION OF HEAVY OIL USING BIMODAL SILICA Si-BMM and Al, Si-BMM

KEY WORDS:

Catalytic cracking, Thermogravimetric, Activation Energy, heavy oil

PAGES: 115
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

Petroleum is responsible for a large part of the energy generations and is currently used due to the intense consumption of its derivatives in combustion engines, industries and commercial products. In its exploration and production, heavy oil can be obtained, in which differentiated treatment is needed to increase the production of light hydrocarbons, characteristics of oil derivatives with high commercial value. Using fluidized bed catalytic cracking, heavy petroleum can be cracked into lighter fractions using hybrid catalysts, one of which is the bimodal meso-macroporous silica, being these promising materials in this area, since it facilitates the process of transporting mass and decrease diffusion limitations. Thus, bimodal catalysts were synthesized and characterized using the techniques: Thermogravimetric Analysis (TGA), X-Ray Diffraction (XRD), Infrared Spectroscopy in the Infrared Region with Fourier Transform (FT-IR), Nitrogen Adsorption and Desorption , Scanning Electron Microscopy (SEM) and Dispersive Energy Spectroscopy (EDS). In order to verify the catalytic activity, the heavy oil with ° API = 17.2 was mixed with 10% Si-BMM catalyst, as well as 10% Al, Si-BMM, then analyzing through analysis thermogravimetric the process of thermal and catalytic degradation of heavy oil, using the kinetic model of Ozawa Flynn Wall (OFW), obtaining the apparent activation energy of the decompositions. The results obtained from TG, provided the final temperature of calcination of the samples, the DRX had the characteristic of a tetrahedral structure of (SiO4) n, the BET provided a surface area of 489 m2 / g, adsorption isotherms and nitrogen desorption with characteristics of meso-macrostructured material, the mapping via EDS showed the presence of metals in the bimodal material and the SEM analysis of the calcined material allowed to visualize the honeycomb arrangements characteristic of the material. Through the kinetic study, it was observed that the use of the catalysts Si-BMM and Al, Si-BMM presented low activation energy, performing excellent catalytic activity.

BANKING MEMBERS:
Externa à Instituição - ANA CATARINA FERNANDES CORIOLANO - UnP
Presidente - 350509 - ANTONIO SOUZA DE ARAUJO
Externa à Instituição - REGINA CELIA DE OLIVEIRA BRASIL DELGADO - UFERSA