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Catalysts based on Ni-Fe oxides supported on γ-Al2O3 for the oxidative dehydrogenation of ethane

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dc.contributor.author Hurtado Cotillo M. es_PE
dc.contributor.author Unsihuay D. es_PE
dc.contributor.author Santolalla-Vargas C.E. es_PE
dc.contributor.author Paredes Doig A. es_PE
dc.contributor.author Sun Kou R. es_PE
dc.contributor.author Picasso G. es_PE
dc.date.accessioned 2024-05-30T23:13:38Z
dc.date.available 2024-05-30T23:13:38Z
dc.date.issued 2020
dc.description.abstract Catalysts based on Ni-Fe-a with a catalyst ratio of a = Ni/(Ni + Fe) (a = 0.8 and 0.9) supported on γ-Al2O3 were prepared by coprecipitation-deposition and tested for the oxidative dehydrogenation (ODH) of ethane. The bulk mixed samples exhibited 30% greater selectivity toward ethylene than did the corresponding simple oxide NiO. Meanwhile, the most selective sample, NiFe-0.9/γ-Al2O3, achieved a maximum of 94% at 400 °C. The remarkable selectivity of NiFe-0.9/γ-Al2O3 was attributed to the partial substitution effect of Ni2+ by Fe3+, thus allowing those catalysts to form oxygen sites that are specific for the partial oxidation of ethane to ethylene. Some additional factors that could have contributed to ethylene selectivity were the formation of low-reducibility species with controlled particle size, a better dispersion of the active phase over the support and the synergy of Fe3+ with Ni2+ species promoted by metal-support interactions. Finally, the catalyst NiFe-0.9/γ-Al2O3 presented stability of 10 h of time-on-stream while maintaining an ethylene selectivity of approximately 60%. © 2019 Elsevier B.V.
dc.description.sponsorship Fondo Nacional de Desarrollo Científico y Tecnológico - Fondecyt
dc.identifier.doi https://doi.org/10.1016/j.cattod.2019.05.044
dc.identifier.scopus 2-s2.0-85066813701
dc.identifier.uri https://hdl.handle.net/20.500.12390/2479
dc.language.iso eng
dc.publisher Elsevier B.V.
dc.relation.ispartof Catalysis Today
dc.rights info:eu-repo/semantics/openAccess
dc.subject γ-Al2O3 support
dc.subject Ethane ODH es_PE
dc.subject Ethylene selectivity es_PE
dc.subject Ni-Fe catalysts es_PE
dc.subject.ocde http://purl.org/pe-repo/ocde/ford#1.04.03
dc.title Catalysts based on Ni-Fe oxides supported on γ-Al2O3 for the oxidative dehydrogenation of ethane
dc.type info:eu-repo/semantics/article
dspace.entity.type Publication
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