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dc.contributor.authorSeguel, Juan C.
dc.contributor.authorLeal, E.
dc.contributor.authorZárate, Ximena P.
dc.contributor.authorSaavedra-Torres, Mario
dc.contributor.authorSchott V, Eduardo
dc.contributor.authorDíaz de Leon, J. N.
dc.contributor.authorBlanco, Élodie
dc.contributor.authorEscalona, Néstor
dc.contributor.authorPecchi, Gina A.
dc.contributor.authorSepúlveda, Catherine Mauricio A.
dc.date.accessioned2021-06-08T02:45:10Z
dc.date.available2021-06-08T02:45:10Z
dc.date.issued2021-10-01
dc.identifier10.1016/j.fuel.2021.121071
dc.identifier.issn00162361
dc.identifier.urihttps://hdl.handle.net/20.500.12728/8901
dc.description.abstractThe present work shows the application of substituted and basic perovskites as catalysts in the levulinic acid conversion. In this context, the effect of the Ag substitution on La1-xAgxCoO3 (x = 0.00, 0.05, 0.10, 0.20) catalysts is reported. The catalysts were characterized by X-ray diffraction (XRD), specific surface area (BET), temperature programed reduction (H2-TPR), methanol-temperature-programmed reaction (CH3OH-TPR) and X-ray photoelectron spectroscopy (XPS) and their catalytic performance was evaluated in a batch reactor at 250 °C and 50 bar of H2. The highest catalytic activity was obtained for the non-substituted LaCoO3 perovskite attributed to a high amount of surface Co2+. The post-reaction XPS characterization of the La1-xAgxCoO3 (x = 0.00, 0.05, 0.10, 0.20) perovskites indicates a partially reduction during the catalysis. The silver substitution increases the perovskites stability in reducting atmosphere, being the xAg = 0.05 the largest. In the levulinic acid (LA) conversion, an increase at shorter reaction times was detected in the formation of HPA as an intermediate followed by dehydration to form GVL. The further hydrogenation step produces pentanoic acid (PA). The presence of reduced surface cobalt species and basic sites in the Ag substituted perovskites promotes the conversion of levulinic acid and selectivity to higher hydrogenation compounds, indicative of that these mixed oxides can be used successfully in hydrotreatment reactions of biomass platform molecules.es_ES
dc.language.isoenes_ES
dc.publisherElsevier Ltdes_ES
dc.subjectBasic siteses_ES
dc.subjectCobaltes_ES
dc.subjectHydrogenationes_ES
dc.subjectLevulinic acides_ES
dc.subjectPerovskitees_ES
dc.subjectSilveres_ES
dc.titleConversion of levulinic acid over Ag substituted LaCoO3 perovskitees_ES
dc.typeArticlees_ES


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