Banca de QUALIFICAÇÃO: FRANCISCO ALEXIS DANTAS MAIA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : FRANCISCO ALEXIS DANTAS MAIA
DATE: 23/05/2023
TIME: 15:00
LOCAL: videoconferência
TITLE:

THERMAL AND CATALYTIC PYROLYSIS OF CRAMBE ABYSSINICA HOCHST OIL USING MCM-41 AND MO/MCM-41 SIEVES AND KINETIC STUDY OF THERMOGRAVIMETRIC ANALYSIS WITH THE OFW AND KAS METHODS

KEY WORDS:

Crambe Abyssinica Hochst; Pyrolysis; Kinetic Study; Bio-oil; Mo/MCM-41

PAGES: 104
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Físico-Química
SPECIALTY: Cinética Química e Catálise
SUMMARY:

The use of renewable fuels to replace fossil fuels has become essential for the preservation of the environment. Therefore, this work brings together various information and discusses aspects about Crambe Abyssinica Hochst, a potential raw material for the production of biofuels, and its oil. This crop is already used in industry to obtain various products, including biodiesel, with the expectation of producing advanced biofuels. Experimentally, approximately 30% of oil was obtained from crambe seeds by extraction using soxhlet, which was later used in a kinetic study through thermal and catalytic decomposition, with mesoporous sieves MCM-41 and Mo/MCM-41 by thermogravimetric analysis (TG/DTG) using the mathematical methods Ozawa-Flynn-Wall (OFW) and Kissinger-Akahira-Sunose (KAS). subsequently, thermal and catalytic pyrolysis of the same material was carried out in the proportion of 88% of the oil plus 12% of the catalysts. The catalysts used in this process were characterized by XRD with the corresponding Miller index peaks, FRX and FTIR observing their formation. Lower Activation Energy (Ea) values were obtained with Mo/MCM-41, probably due to molybdenum impregnation, lowering the values both in the OFW and KAS methods. After performing the pyrolysis of the crambe oil with the catalysts, the result was consistent with the kinetic study, showing that the catalyst Mo/MCM-41 obtained the best result for the formation of hydrocarbons, reaching 41.12%.

COMMITTEE MEMBERS:
Presidente - 2140818 - AMANDA DUARTE GONDIM
Externa à Instituição - ANNE GABRIELLA DIAS SANTOS - UERN
Externa à Instituição - ARUZZA MABEL DE MORAIS ARAUJO - UFRN
Externa à Instituição - EDJANE FABIULA BURITI DA SILVA - Estácio
Externa à Instituição - FABÍOLA CORREIA DE CARVALHO - ISI-ER