Synthesis of very highly dispersed platinum catalysts supported on carbon xerogels by the strong electrostatic adsorption method

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

Lambert, S (Autor) Outra; Job, N (Autor) Outra; D'Souza, L (Autor) Outra; Manuel Fernando R Pereira (Autor) FEUP; Pirard, R (Autor) Outra; Heinrichs, B (Autor) Outra; José Luis Figueiredo (Autor) FEUP; Pirard, JP (Autor) Outra; Regalbuto, JR (Autor) Outra

Revista

Título: Journal of Catalysis

Vol. 261

Páginas: 23-33

ISSN: 0021-9517

Editora: Elsevier

Indexação

ISI Web of Knowledge - 89 Citações

ISI Web of Science

Scopus - 108 Citações

COMPENDEX

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Outras ciências da engenharia e tecnologias

CORDIS: Ciências Tecnológicas

Outras Informações

ID Authenticus: P-003-QTW

DOI: 10.1016/j.jcat.2008.10.014

Abstract (EN): Highly dispersed Pt/carbon xerogel catalysts are obtained by applying the "strong electrostatic adsorption" (SEA) of hexachloroplatinic acid to carbon xerogels (PZC = 9.4) and platinum tetraammine chloride to oxidized carbon xerogels (PZC = 2.4). After the reduction step, all these Pt/carbon xerogel catalysts display a very high level of metal dispersion: very small platinum particles (1.1-1.3 rim) are observed by TEM. Pt particle sizes obtained by CO chemisorption are in good agreement with TEM micrographs, which shows that the metal is accessible to reactants. These Pt/carbon xerogel catalysts are very active for the hydrogenation of benzene into cyclohexane.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11