Banca de QUALIFICAÇÃO: WILLIAN ALBER DA SILVA FARIAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WILLIAN ALBER DA SILVA FARIAS
DATE: 14/07/2025
TIME: 10:00
LOCAL: Auditório do 2º andar do NUPPRAR
TITLE:

NICKEL CATALYST SUPPORTED ON THERMALLY REDUCED GRAPHENE OXIDE FOR HYDROGEN PRODUCTION VIA DRY METHANE REFORMING

KEY WORDS:

dry reforming of methane (DRM); nickel catalyst; graphene oxide (GO)

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

In recent decades, the increase in energy consumption, driven by population growth and industrialization, has generated a growing demand for fossil fuels, resulting in greenhouse gas emissions. Methane and CO₂ are the main contributors to recent climate change, with the burning of natural gas being a significant source of emissions. To address this challenge, initiatives such as carbon capture and storage (CCS) and the transition to renewable energy are essential. The conversion of methane and CO₂ into value-added products, such as synthesis gas, has been explored, with reforming emerging as a promising technique. This approach, particularly through the dry reforming of methane (DRM), offers a way to utilize CO₂ and methane to produce syngas while reducing greenhouse gas emissions. The catalyst plays a crucial role in this process, with nickel emerging as a viable alternative due to its low cost and significant catalytic activity. The textural modification of nickel-based catalysts has been investigated to improve their catalytic efficiency. Graphene, with its high surface area, has emerged as a promising support for such catalysts. The synthesis process of graphene oxide (GO) is relatively simple and inexpensive compared to other solid supports. Studies indicate that nickel catalysts supported on GO are promising for DRM, as thermal treatment or reductive processes can increase the surface area and promote the formation of nickel particles in desirable shapes, such as nanosheets, enhancing their catalytic performance. This study analyzes the potential application of GO and reduced GO as supports for nickel catalysts and investigates how their morphologies and structures influence the performance of the dry reforming of methane. The experimental results aim to identify the most effective catalyst for this application, considering parameters such as hydrogen conversion, metal state, dispersion, and particle size.

COMMITTEE MEMBERS:
Presidente - 349770 - DULCE MARIA DE ARAUJO MELO
Interno - 1298936 - ANTONIO EDUARDO MARTINELLI
Externo à Instituição - RODOLFO LUIZ BEZERRA DE ARAÚJO MEDEIROS - UFRN
Externo à Instituição - TIAGO ROBERTO DA COSTA - IFRN
Externo à Instituição - ÂNGELO ANDERSON SILVA DE OLIVEIRA - UFRN