Platinum on carbonaceous supports for glycerol hydrogenolysis: Support effect

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Oberhauser, W (Autor) Outra; Evangelisti, C (Autor) Outra; Jumde, RP (Autor) Outra; Psaro, R (Autor) Outra; Vizza, F (Autor) Outra; Bevilacqua, M (Autor) Outra; Filippi, J (Autor) Outra; B.F. Machado (Autor) Outra; Serp, P (Autor) Outra

Revista

Título: Journal of Catalysis

Vol. 325

Páginas: 111-117

ISSN: 0021-9517

Editora: Elsevier

Indexação

ISI Web of Knowledge - 21 Citações

Scopus - 32 Citações

Outras Informações

ID Authenticus: P-00M-G29

DOI: 10.1016/j.jcat.2015.03.003

Abstract (EN): Metal vapor synthesis (MVS) technique was applied to generate Pt-nanoparticles of different size (<1.3 nm and 2.5 nm) deposited onto carbonaceous supports, mainly characterized by a different surface area. The supported catalysts were employed in the glycerol hydrogenolysis reaction carried out under basic reaction conditions at 433 and 453 K to obtain 1,2-propanediol as the main liquid product. Comparison of the composition of the liquid- and gas-phase products obtained by the different catalysts showed a clear dependence of aqueous-phase reforming, water-gas shift reaction activity as well as 1,2-propanediol chemoselectivity on the degree of Pt-sintering occurring on different carbon supports. High-resolution transmission electron microscopic and X-ray powder diffraction studies carried out on as-synthesized and recovered heterogeneous catalysts provided clear evidences that a high surface area carbon support, such as Ketjen Black EC-600JD, notably retards nanoparticle aggregation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7