Banca de DEFESA: EMANUEL BRUNO COSTA DANTAS ELIAS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : EMANUEL BRUNO COSTA DANTAS ELIAS
DATE: 23/04/2026
TIME: 14:00
LOCAL: video conferencia
TITLE:

VALORIZATION OF A BYPRODUCT FROM THE GREEN SILICON INDUSTRY FOR THE SYNTHESIS OF ZEOLITES WITH TECHNOLOGICAL POTENTIAL

KEY WORDS:

Hydrothermal synthesis. Zeolites. Industrial by-product. Alternative silica. Crystallinity. Circular economy

PAGES: 150
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Cerâmicos
SUMMARY:

This dissertation addresses the valorization of a byproduct from the silicon metal industry, sourced from the company LIASA, as a sustainable alternative to commercial silica in the synthesis of zeolites with technological potential. The byproduct was characterized by different techniques (XRD, XRF, TG, FTIR, SEM, EDS, TOC), revealing a predominantly amorphous composition with a high SiO2 content. The experimental methodology included the hydrothermal synthesis of LTA, FAU (NaX), MOR, MWW (MCM-22) and BEA type zeolites, using both standard procedures and the byproduct as an alternative silicon and aluminum source. Kinetic studies allowed for the identification of optimal crystallization conditions, indicating that the byproduct exhibits performance compatible with or equivalent to commercial sources. The results highlight the byproduct's potential as a feedstock for applications in catalysis, adsorption, and other technological areas that employ zeolitic materials, demonstrating through evidence the capability to replace conventional silicon and aluminum sources with the studied industrial byproduct, promoting the circular economy and contributing to more sustainable processes in the field of porous materials.

COMMITTEE MEMBERS:
Presidente - 1308577 - SIBELE BERENICE CASTELLA PERGHER
Interna - 349770 - DULCE MARIA DE ARAUJO MELO
Externa ao Programa - ***.566.270-** - LINDIANE BIESEKI - UFRN
Externo à Instituição - ADONAY RODRIGUES LOIOLA - UFC