Gold supported on carbon nanotubes for the selective oxidation of glycerol

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

E.G. Rodrigues (Autor) Outra; S.A.C. Carabineiro (Autor) FEUP; J.J. Delgado (Autor) Outra; X. Chen (Autor) Outra; M. F. R. Pereira (Autor) FEUP; J. J. M. Orfão (Autor) FEUP

Revista

Título: Journal of Catalysis

Vol. 285

Páginas: 83-91

ISSN: 0021-9517

Editora: Elsevier

Indexação

ISI Web of Knowledge - 84 Citações

ISI Web of Science

Scopus - 97 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Físicas > Química > Catálise heterogénea

Outras Informações

ID Authenticus: P-002-H3V

DOI: 10.1016/j.jcat.2011.09.016

Abstract (EN): Gold nanoparticles were supported on multi-walled carbon nanotubes (MWCNTs) by different methods and tested in the selective oxidation of glycerol under basic conditions, with the main purpose of evaluating the effect of the preparation technique on the activity and selectivity. The catalytic performances largely depended on the gold crystallite size. The sol immobilization method was the most suitable technique to prepare gold supported on carbon nanotubes. The use of MWCNTs as support for Au nanoparticles resulted in the oxidation of the secondary hydroxyl group, and therefore, a remarkable high dihydroxyacetone selectivity of about 60% is obtained independently of the preparation method used. A possible explanation based on the peculiar characteristics of the support is proposed. It was also concluded that dihydroxyacetone in the final mixture can be stabilized by lowering the pH to about 3.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9