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Increase of Ceria Redox Ability by Lanthanum Addition on Ni Based Catalysts for Hydrogen Production [component]

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The effects of lanthanum addition in Ni/CeO 2 catalysts were investigated. The influence of synthetic procedures, namely, impregnation or coprecipitation of lanthanum and cerium oxide, were evaluated. Materials were analyzed by BET, AAS, DRIFT-MS, TPR, OSC, XRD, and SEM-EDX. Samples were tested in ethanol steam reforming (ESR). Both lanthanumpromoted samples exhibited a higher stability in time than nonpromoted catalyst. Nonetheless, catalytic behavior is strongly affected by the preparation
more » ... hod. TPR, OSC, and XRD analyses showed that the coprecipitation method allowed the best interaction between ceria and lanthana, leading to an increased redox ability and best catalytic performances as a result. A catalyst with a support prepared via the coprecipitation method showed ethanol conversion of 90% and hydrogen selectivity higher than 70% even after 60 h of reaction.
doi:10.1021/acssuschemeng.8b02103.s001 fatcat:oa4twvoblbefjfh5mdlpvqk4gu
Citation

"Increase of Ceria Redox Ability by Lanthanum Addition on Ni Based Catalysts for Hydrogen Production."