Catalytic conversion of cellulose to sorbitol over Ru supported on biomass-derived carbon-based materials

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Natalia Rey-Raap (Autor) Outra; Lucília Sousa Ribeiro (Autor) FEUP; José Melo Orfão (Autor) FEUP; José Luis Figueiredo (Autor) FEUP; Manuel Fernando R. Pereira (Autor) FEUP

Revista

Título: Applied Catalysis B: Environmental

Vol. 256

ISSN: 0926-3373

Editora: Elsevier

Indexação

ISI Web of Knowledge - 34 Citações

Scopus - 38 Citações

Projetos Associados

AIProcMat@N2020 - Advanced Industrial Processes and Materials for a Sustainable North Region of Portugal2020

Outras Informações

ID Authenticus: P-00Q-RA7

DOI: 10.1016/j.apcatb.2019.117826

Abstract (EN): The direct conversion of cellulose into sorbitol, one of the platform molecules of highest potential, by using a low-cost catalyst that yields higher productivity is a current challenge. Ruthenium/glucose-derived carbons with tailored textural and chemical properties were prepared by combining two different strategies: activation and addition of carbon nanotubes (CNT) to obtain a hybrid carbon material (AG-CNT). The appropriate combination of both strategies results in materials with high microporosity and low acidity that favors the dispersion of the metal and, hence, improves the yield of sorbitol. The total conversion of cellulose (100%) and the highest yield of sorbitol (64.1%) were achieved over a hybrid catalyst with high specific surface area of 1200 m(2) g(-1) (Ru/AG-CNT1200) within 3 h of reaction, at 205 degrees C and 50 bar of H-2. In addition, the catalyst was successfully recycled in four runs. These results are better than those reported over Ru/CNT (the highest yield reported to date over carbon supports) under the same reaction conditions, indicating that CNT can be successfully replaced by a low-cost support derived from biomass. As a result, not only the highest yield of sorbitol is obtained, but cellulose, one of the most important fractions of biomass, is valorized through two pathways: the cellulose itself as the main raw material of the reaction and its monomer, glucose, for the preparation of the catalyst.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13