Influence of la incorporation on the catalytic activity of Ru/ETS-10 catalysts for hydrogen production

Faroldi, B. ; Irusta, S. (Universidad de Zaragoza) ; Cornaglia, L.

Resumen: The incorporation of lanthanum on ETS-10 titanosilicate and its influence on the catalytic activity of Ru catalysts for the dry reforming of methane reaction were studied. The catalysts were prepared through ion exchange of ETS-10 using different lanthanum solution concentrations (0.1, 0.2 and 0.4 wt% of La2O3). The Ru loading was 0.6 wt% for all catalysts. The methane reaction rates for Ru/LaETS-10 catalysts showed an increase in comparison with Ru/ETS-10. This could be related to the lanthanum participation in the reaction mechanism. Moreover, all the formulations were stable after 70 h on stream. In order to study the effect of lanthanum exchange in the structure of ETS-10 supports, the solids were characterized by BET, XRD, TEM, FTIR XPS, and laser Raman spectroscopy. The relative crystallinities were lower than 80%, indicating that the La exchange could have an important effect on the crystalline structure of ETS-10, in agreement with Raman and FTIR results. The surface Ru/Ti ratio determined by XPS was higher in the case of Ru/LaETS-10 synthesized with the highest La concentration in the exchange solution. The Na/Ti ratio, measured by XPS and EDX, was lower for the Ru/LaETS-10 catalysts compared with ETS-10 suggesting that La was exchanged in the structure.

Idioma: Inglés

DOI: 10.1016/j.apcata.2015.02.037

Año: 2015

Publicado en: APPLIED CATALYSIS A-GENERAL 504 (2015), 391-398
ISSN: 0926-860X

Factor impacto JCR: 4.012 (2015)

Categ. JCR: ENVIRONMENTAL SCIENCES rank: 29 / 225 = 0.129 (2015) - Q1 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 35 / 144 = 0.243 (2015) - Q1 - T1

Factor impacto SCIMAGO: 1.218 - Process Chemistry and Technology (Q1) - Catalysis (Q2)

Tipo y forma: Artículo (PostPrint)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)