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Mostrando ítems 1-10 de 142
Artículo
Synergy between gold and oxygen vacancies in gold supported on Zr-doped ceria catalysts for the CO oxidation
(Elsevier, 2015)
The CO oxidation activity of 1 wt.% gold catalysts prepared by depositionprecipitation on a series of ceria doped with Zr supports was studied. The supports (10, 25 and 50 Zr At. %) were synthesized by a pseudo sol-gel ...
Artículo
Selective CO methanation with structured RuO2/Al2O3 catalysts
(Elsevier, 2018)
Active and selective structured RuO2/Al2O3 catalysts for CO methanation using a flow simulating CO2-rich reformate gases from WGS and PROX units (H2 excess, CO2 presence and 300 ppm CO concentration) were prepared. Both, ...
Tesis Doctoral
Artículo
Phase assembly and electrical conductivity of spark plasma sintered CeO2–ZrO2 ceramics
(Springer Verlag, 2014)
Ce x Zr1−x O2 (x = 0.10, 0.16 and 0.33) nanocrystalline powders were obtained by a two-step synthesis technique and sintered by spark plasma sintering (SPS). As consequence of the reduction of Ce4+ to Ce3+ species by carbon ...
Tesis Doctoral
Estudio de la modificación del catalizador RH/AL2O3 por iones lantánidos en la reacción COX/H2. Aplicación de la técnica DRIFTS
(1991-10-25)
La hidrogenación de los óxidos de carbono, especialmente CO, es un campo en el que se ha venido trabajando, extensivamente, desde comienzos del presente siglo. Clasificaciones sistemáticas que permiten elegir “a priori” ...
Tesis Doctoral
Caracterización y modificación de materiales de interés tecnológico e industrial mediante técnicas nucleares
(1999-06-04)
Las técnicas nucleares que utilizan haces de partículas para análisis, caracterización o modificación de materiales (técnicas deIon Beam Analysis ó IBA) vienen siendo empleadas con notable éxito en los últimos 15 años en ...
Artículo
A direct in situ observation of water-enhanced proton conductivity of Eu-doped ZrO2: Effect on WGS reaction
(Elsevier, 2018)
Eu-doped ZrO2 solid solutions have been synthesized in order to prepare proton conductors as water-enhancer additives for the WGS reaction. Elemental characterization has been carried out revealing homogeneous ...
Artículo
Pt/CePO4 catalysts for the WGS reaction: influence of the water-supplier role of the support on the catalytic performance
(Royal Society of Chemistry, 2018)
For Pt catalysts which have demonstrated great activity for the WGS reaction, the activation of water is described as the rate-limiting step. Such limitation could be overcome through the design of supports able to supply ...
Tesis Doctoral
Utilización de la espectroscopía infrarroja para el estudio de catalizadores heterogéneos.
(2018-02-09)
En el marco energético de la sociedad actual, se impone la búsqueda de fuentes de energía alternativas al petróleo, debido fundamentalmente, a la cada vez más estricta normativa medioambiental y a la disminución que se ...
Artículo
Flexible NiRu Systems for CO2 Methanation: From Efficient Catalysts to Advanced Dual-Function Materials
(Multidisciplinary Digital Publishing Institute (MDPI), 2023)
CO2 emissions in the atmosphere have been increasing rapidly in recent years, causing global warming. CO2 methanation reaction is deemed to be a way to combat these emissions by converting CO2 into synthetic natural gas, ...