Exploring Iron Oxide Catalysts for Acetone Hydrodeoxygenation: Making Use of an Earth-Abundant Resource

Autor(es)

Nunes, Pedro B. M. ; Strapasson, Guilherme B. ; Bafero, Gabriel B. ; Zanchet, Daniela

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 35, n. 12, p. 11-pg., 2024-01-01.

Resumo

The catalytic performance of gamma-Fe 2 O 3 nanopowder was investigated in the acetone hydrodeoxygenation (HDO) reaction, an essential catalytic reaction in biomass valorization. Sequential reduction/oxidation thermal pre-treatments of the gamma-Fe 2 O 3 nanopowder induced significant structural and electronic modifications that directly impacted its catalytic performance. The co-existence of Fe3+/Fe2+/Fe0 3+ /Fe 2+ /Fe 0 sites led to different reaction pathways (C- C coupling, hydrogenolysis, hydrogenation, and (hydro)deoxygenation) that formed a wide range of products. The correlation of the catalytic and structural data provided a better understanding of C- O, C- C, and C- H bond activation under the HDO reactional stream in the presence of metallic and oxidized phases of iron. This study demonstrates the tunability of FeOx x catalysts in the acetone HDO reaction to favor different reaction pathways and the formation of products. It highlights that tailoring active sites is crucial for developing selective and optimized catalysts for the HDO reaction. (AU)

• Processo FAPESP: 22/09325-9 - Caracterização de óxidos de metais de transição visando aplicações catalíticas
• Beneficiário: Pedro Becchelli de Moraes Nunes
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 20/12986-1 - Design de catalisadores de níquel suportados em nanoestruturas 1D à base de TiO2/Nb2O5
• Beneficiário: Guilherme Boenny Strapasson
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto