Banca de QUALIFICAÇÃO: KAROLINE DE SOUSA CASTRO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : KAROLINE DE SOUSA CASTRO
DATE: 11/12/2019
TIME: 09:00
LOCAL: Auditório do NUPPRAR/UFRN
TITLE:

Study of the thermocatalytic degradation of Cana Energia using molybdenum and zinc impregnated MCM-41 to obtain renewable hydrocarbons

KEY WORDS:

Cana Energy, MCM-41, thermal study, kinetic study

PAGES: 120
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUMMARY:

The growing demand for fuels that are alternative to fossil fuels, such as ethanol, has resulted in the exacerbated expansion of sugarcane causing invasions on food lands. In order to eliminate this problem and to continue the growing production of ethanol and other fuels, Cana Energia was developed, presenting high resistance to water stress and pests, its production is three times higher than conventional sugarcane production. This biomass can be transformed into renewable hydrocarbons by going through a pyrolysis process and obtaining higher quality hydrocarbons in thermocatalytic pyrolysis. Thus, this work aims to synthesize MCM-41 catalysts with and without the presence of zinc and molybdenum metals in the percentage of 2% alone and 1% each, when together in the MCM-41 and to study the thermal and thermocatalytic decomposition of Energy cane. The catalysts were characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM / EDS) showing that the support had a hexagonal structure according to the literature and the metals were inserted without destruction of the structure. For a better use of biomass, this was acetylated and analyzed by the techniques of Elemental Analysis (CHN), Fourier Transform Infrared Spectroscopy (FTIR) and Thermal Analysis (TGA/DTG) in which the modification of the –OH groups was observed. acetyl groups. The thermogravimetric study and the kinetic study were performed for biomass with and without catalyst using the Ozawa-Flynn-Wall (OFW) and Kissinger-Akahira-Sunose (KAS) kinetic models. Based on the values of R², it was noted that the OFW model was more appropriate for the study of the present work. From the Ea results, these indicated that the MCM-41, MoO3MCM-41 and ZnOMoO3 / MCM-41 catalysts decreased the Ea of the biomass thermal decomposition process by 68.98 Kj / mol; 61.42 Kj / mol and 43.83 Kj / mol respectively.

BANKING MEMBERS:
Presidente - 2140818 - AMANDA DUARTE GONDIM
Externa ao Programa - 2011255 - ARUZZA MABEL DE MORAIS ARAUJO
Externo à Instituição - EDUARDO RIGOTI - UFRN
Externa ao Programa - 2140775 - LIVIA NUNES CAVALCANTI
Externa à Instituição - REGINEIDE DE OLIVEIRA LIMA - UFRN