Banca de QUALIFICAÇÃO: JULIANA ELIONARA BEZERRA COSTA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : JULIANA ELIONARA BEZERRA COSTA
DATA : 26/10/2017
HORA: 10:00
LOCAL: Auditório do NUPPRAR
TÍTULO:

ALTERNATIVE ZSM-5 AND HZSM-5 ZEOLITES USAGE AS CATLYSTS ON COCONUT FYBER PYROLYSIS 

PALAVRAS-CHAVES:

Catalytic Pyrolysis, coconut fiber, ZSM-5, HZSM-5.

PÁGINAS: 96
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
RESUMO:

The environmental impact caused by solid residue generation is a very current concern. Some residues from any kinds of activities can be reused so that the effect those impacts is decreased. The residues classified as lignocellulosic biomas can be converted to chemicals and fuels through the fast pyrolysis giving bio-oil as main product. This product usually shows some undesirable characteristics which are related to the biomass source and that lower its energetic efficiency. Using catalysts allows the reduction of those unwanted products and improves the final quality of the bio-oil. Thus, in the presente thesis, ZSM-5 and HZSM-5 catalysts were synthesised using residues from granite powder. glass powder. diatomite and rice-husk ash as alternative sources of silica and aluminum; it was also synthesised a catalyst using a conventional silica and aluminum source as a standard. The goal of synthesizing those materials is to use them on the catalytic pyrolysis of the coconut fyber and to analise the generated products. The used biomass was characterized through immediate constituent analysis (moist, ash, volatile and fixed carbon), specific density, elementar analysis, cellulose, hemicellulose and lignin percentage, calorific power, thermal analysis (TG/DTG), XRD, FT-IR and FRX in order to analise its energetic potential. The silica and aluminum precursors were also put under FRX, XRD and FT-IRanalysis to see the behavior of the used materials. The catalysts were synthesised through the hidrothermic method and characterized by TG/DTG, XRD, FT-IR, SEM and BET. It was shown that the catalysts synthesised as alternative sources have ZSM-5/ HZSM-5-like characteristics and can by applied as catalysts on the coconut fyber pyrolisis

MEMBROS DA BANCA:
Externo à Instituição - CINTIA DE CASTRO COSTA - UFRN
Externo à Instituição - JOANA MARIA DE FARIAS BARROS - UFPB
Presidente - 6347420 - MARCUS ANTONIO DE FREITAS MELO
Externo ao Programa - 1979301 - RENATA MARTINS BRAGA