Banca de QUALIFICAÇÃO: JOÃO LEONARDO FREITAS OLIVEIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : JOÃO LEONARDO FREITAS OLIVEIRA
DATA : 28/01/2019
HORA: 09:00
LOCAL: Sala 3F1
TÍTULO:

KINETICS AND RAPID PYROLYSIS OF LICURI OIL (Syagrus coronata) USING NATURAL/ACID VERMICULITE WITH ZINC OXIDE TO OBTAIN BIO-OIL

PALAVRAS-CHAVES:

Pyrolysis, vermiculite, kinetic study, bio-oil and zinc oxide

PÁGINAS: 90
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Química
SUBÁREA: Físico-Química
ESPECIALIDADE: Cinética Química e Catálise
RESUMO:

The application of clays has become more common in several areas of research in recent decades, thanks to its unique properties, be it in its pure form or modified physically / chemically. In this work, the natural and acidic vermiculite was used as catalyst and support for zinc oxide, in order to obtain promising catalysts for application in the pyrolysis of oleaginous plant origin known as licuri (Syagrus coronata). In all, six catalysts were synthesized, zinc oxide (Zn), vermiculite supported with zinc oxide at the percentages of 1 and 6% by mass (VZn1 and VZn6), vermiculite calcined (V), vermiculite acid (Va) and vermiculite acid with 1% zinc oxide. The catalysts under study were characterized by the following techniques: X-ray diffractometry (XRD), thermogravimetric analysis (TGA), nitrogen adsorption / desorption and scanning electron microscopy (SEM). The pyrolysis tests for the determination of activation energy were performed on a thermogravimetric scale following the Kissinger-Akahira-Sunose kinetic model (KAS). Rapid pyrolysis was also performed using a Py-CG / MS for separation and determination of the bio-oil composition. In the kinetic study of the pyrolysis of the liqueur oil, the catalysts with the highest catalytic activity were the calcined vermiculite (V) and the VZn1, with activation energy lower than the thermal pyrolysis of the oil from the 10% conversion. VZn1 showed higher activity for the formation of hydrocarbons by deoxygenation of the oil, showing that the zinc oxide associated with vermiculite presents as an alternative option there are conventional catalysts for studies in the area of pyrolysis and bio-oil production.

MEMBROS DA BANCA:
Presidente - 2140818 - AMANDA DUARTE GONDIM
Externo à Instituição - ANA PAULA DE MELO ALVES - UFPB
Externo à Instituição - ARUZZA MABEL DE MORAIS ARAUJO - UFRN
Interno - 2087667 - TIAGO PINHEIRO BRAGA