Catalytic steam reforming of methane under conditions of applicability with Pd membranes over supported Ru catalysts

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Soria, M. A. (Autor) Outra; Mateos-Pedrero, C. (Autor) Outra; Rodriguez Ramos, I (Autor) Outra; Guerrero Ruiz, A (Autor) Outra

Revista

Título: Catalysis Today

Vol. 171

Páginas: 126-131

ISSN: 0920-5861

Editora: Elsevier

Indexação

ISI Web of Knowledge - 15 Citações

ISI Web of Science

Scopus - 16 Citações

Outras Informações

ID Authenticus: P-00M-N87

DOI: 10.1016/j.cattod.2011.02.020

Abstract (EN): Three Ru catalysts supported on SiO2, ZrO2-SiO2 and ZrO2-La2O3 have been prepared, characterized and tested in the methane steam reforming (SR) reaction, and for comparative purposes a Ni/SiO2 catalyst has also been studied. Conditions of catalytic studies have been selected for the subsequent application in a hydrogen extraction Pd membrane reactor. That is, reaction temperatures in the range of 400-550 degrees C and with different amounts of catalyst in order to work under and/or close to the equilibrium conversion conditions. All the supported Ru samples exhibit high catalytic activity and similar CO and H-2 yields. Finally these catalysts are fully stable under reaction conditions at 550 degrees C for 15 h, while the Ni/SiO2 sample suffers a significant deactivation. The main deactivation process affecting this latter catalyst is the carbon deposition of partially dehydrogenated intermediates as detected by Raman spectroscopy. Hence, these Ru catalysts appear to be suitable for application combined with metallic (Pd) membrane.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6