Banca de DEFESA: EDUARDO RIGOTI
Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.DISCENTE : EDUARDO RIGOTI
DATA : 06/10/2017
HORA: 14:00
LOCAL: Auditório do CCET
TÍTULO:
DEVELOPMENT OF NEW CATALYTIC MATERIALS BASED MOLYBDENIUM SUPPORTED ON ORDERED MESOPOROUS SILICA AND CARBONS FOR HYDRODEOXYGENATION REACTIONS
PALAVRAS-CHAVES:
Hydrodeoxygenation, Ordered Mesoporous Silica, Ordered Mesoporous Carbon, Molybdenum Oxide, Molybdenum Carbide
PÁGINAS: 120
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Cerâmicos
RESUMO:
The aim of this thesis was to develop new catalytic materials through the synthesis of mesoporous silica and carbon supports for Mo impregnation to study its catalytic performance in hydrodeoxygenation of gas-phase platform molecules, where it was tried to determine the influence of the catalyst, support and support/catalyst behavior under different reaction conditions. Mesoporous carbons were obtained using the silica materials as a template. The impregnation of molybdenum oxide (MoO3) was carried out by the incipient wetness impregnation to obtain an amount of 4 and 2 Mo atoms/nm² in the silica and carbon supports. Molybdenum carbides were obtained in situ and ex situ by means of Temperature Programmed Carburization (TPC). Characterization was performed using several techniques such as X-Ray Diffraction (XRD), N2 physisorption, Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), by these techniques was possible to confirm the synthesis of the silica and carbon materials and the subsequent impregnation of the molybdenum oxide. The techniques of programmed temperature decomposition (TPD), programmed temperature reduction (TPR) and Raman spectroscopy allowed to evaluate the influences of the different reaction conditions on catalysts. The materials were evaluated in hydrodeoxygenation reactions phenol. The results showed an excellent selectivity in reactions with phenol indicating optimal conditions for the reaction at 500 °C. Among all the catalysts studied, the material supported on the CMK-3 carbon replica presented the best results.
MEMBROS DA BANCA:
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER
Interno - 349770 - DULCE MARIA DE ARAUJO MELO
Externo ao Programa - 2087667 - TIAGO PINHEIRO BRAGA
Externo à Instituição - ANNE GABRIELLA DIAS SANTOS - UERN
Externo à Instituição - CRISTIANE BARBIERI RODELLA - LNLS
Externo à Instituição - VICTOR LUIS DOS SANTOS TEIXEIRA DA SILVA - Coppe