Banca de QUALIFICAÇÃO: PATRÍCIA ALVES SOBRINHO RODRIGUES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : PATRÍCIA ALVES SOBRINHO RODRIGUES
DATE: 11/11/2019
TIME: 10:00
LOCAL: Auditório do NUPPRAR
TITLE:

Study of Ferrierite zeolite (FER) as a catalyst for biomass pyrolysis.

KEY WORDS:

synthesis, ferrierite (FER), catalysis.

PAGES: 80
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

Zeolites are porous materials with crystalline structure belonging to the molecular sieve class. The syntheses of zeolitic materials can be modified by varying the parameters according to the need of the final material. This study presents the characterization of the different syntheses of ferrierite zeolite (FER). The syntheses were studied from the recipe presented at IZA to the modified ones regarding silica sources, time variation, Si / Al ratio variation, rotation variation, and surfactant use. For characterization, X-ray Diffraction (XRD), X-ray Fluorescence (FRX), Scanning Electron Microscopy (SEM), and Thermogravimetric Analysis (TG) analyzes were performed. In the present work some parameters were varied, time, Si/Al ratio and agitation. The purpose of these variations is to obtain a more crystalline structure and different morphologies for an improvement in the catalysis reactions that will be studied in a second stage of the work. It was observed that in the syntheses studied with different silica sources a good crystallinity of the FER structure was obtained in a time optimized in relation to the literature. In the syntheses studied with kaolin, diatomite and β-spodumene residue, there were other phases besides ferrierite. In the study with the use of surfactant, which aimed to change morphology, it was seen that in the Si/Al 7,6 ratio, the structure of the RES was obtained, but without change in morphology, in the Si/Al ratio 15,2. there is another phase besides FER, and in Si/Al ratio we got another structure, ZSM-5, instead of FER.

BANKING MEMBERS:
Interna - 349770 - DULCE MARIA DE ARAUJO MELO
Externa à Instituição - LINDIANE BIESEKI - UFRN
Externa à Instituição - MARIELE IARA SOARES DE MELLO - UFRN
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER