Banca de QUALIFICAÇÃO: RENATA CIBELY FREIRE DE LIMA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : RENATA CIBELY FREIRE DE LIMA
DATE: 04/11/2024
TIME: 13:30
LOCAL: Auditório LABTAM
TITLE:

ZEOLITES SYNTHESIZED FROM ALTERNATIVE SOURCES OF SI AND AL: A SUSTAINABLE APPROACH TO CONVERTING BIOMASS INTO BIOFUELS

KEY WORDS:

Corn cob residue, catalytic pyrolysis, ZSM-5, HZSM-5.

PAGES: 54
BIG AREA: Engenharias
AREA: Engenharia Química
SUMMARY:

The way we deal with waste from different activities is essential to reduce the negative
impacts they can have on the environment. Among these wastes, lignocellulosic
biomass has great potential to be transformed into chemical products and fuels through
conventional fast pyrolysis. This process generates bio-oil as its main product, whose
properties are directly linked to the type of biomass used, and which can be improved
with the use of catalysts. In this study, ZSM-5 and HZSM-5 catalysts were created,
using bentonite clay and rice husk ash as alternative sources, in addition to a catalyst
made from a conventional source of silica and aluminum. The objective of synthesizing
these materials is to use them as catalysts in the pyrolysis of corncob residue, seeking to
obtain products with greater added value and reduce the formation of oxygenated and
nitrogenated compounds. The biomass used was characterized by immediate analysis,
density, elemental analysis, cellulose, hemicellulose and lignin content, calorific value,
TG/DTG, DRX, in order to analyze its energy potential. The silica and aluminum
precursors were subjected to FRX, DRX analyses, and the catalysts were characterized
by DRX, SEM and BET. The results of conventional pyrolysis of corncob residue
showed a large production of oxygenated and nitrogenated products, and the results of
catalytic pyrolysis showed a significant decrease in these compounds, which proves the
effectiveness of the developed catalysts.

COMMITTEE MEMBERS:
Presidente - 1979301 - RENATA MARTINS BRAGA
Externa ao Programa - 1308577 - SIBELE BERENICE CASTELLA PERGHER - UFRNExterna à Instituição - MARIELE IARA SOARES DE MELLO - UFRN