Selective Conversion of Furfural to Furfuryl Alcohol by Heterogeneous TiO2 Photocatalysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 2024

Autores

Lopes, JC (Autor) Outra; Sampaio, M.J. (Autor) FEUP; Claudia G Silva (Autor) FEUP; Joaquim Luís Faria (Autor) FEUP

Revista

Título: ChemPhotoChem

ISSN: 2367-0932

Editora: Wiley-VCH

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Projetos Associados

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Outras Informações

ID Authenticus: P-010-HQM

DOI: 10.1002/cptc.202400062

Abstract (EN): Selective synthesis of furfuryl alcohol from furfural conversion via semiconductor photocatalytic route has appeared as a promising solution for transforming biomass into high-value-added products under mild temperature and pressure conditions. Titanium dioxide (TiO2) photocatalysts were prepared by a simple sol-gel method followed by a calcination treatment ranging from 500-1000 degrees C, resulting in materials with distinct physicochemical properties. The photocatalytic efficiency of the TiO2 samples was examined in the selective production of furfuryl alcohol from furfural under UV-LED irradiation. The influence of various organic solvents, including ethanol, methanol, 2-propanol, and acetonitrile, was evaluated to optimise the selectivity towards furfuryl alcohol production. Photocatalysts with larger anatase to rutile ratio and increased density of oxygen vacancies (defects) exhibited superior performance for furfuryl alcohol production. The presence of these defects on the catalyst surface leads to a significant enhancement in the photocatalytic efficiency by acting as crucial active sites. Among the TiO2 samples, the highest conversion of furfural into furfuryl alcohol was observed with the TiO2 sample calcined under an air atmosphere at 600 degrees C (TiO2-600), achieving 85 % yield and 100 % selectivity for furfural after 30 min reaction using ethanol as solvent.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11