Influence of la incorporation on the catalytic activity of Ru/ETS-10 catalysts for hydrogen production
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: CHEMISTRY, PHYSICAL rank: 35 / 144 = 0.243 (2015) - Q1 - T1
Categ. JCR: ENVIRONMENTAL SCIENCES rank: 29 / 224 = 0.129 (2015) - Q1 - T1

Factor impacto SCIMAGO:

Tipo y forma: Article (PostPrint)
Área (Departamento): Ingeniería Química (Departamento de Ingeniería Química y Tecnologías del Medio Ambiente)

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Exportado de SIDERAL (2016-06-27-10:00:52)

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