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Graphite supported heteropolyacid as a regenerable catalyst in the dehydration of 1-butanol to butenes

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dc.contributor.authorConesa, José M.
dc.contributor.authorMorales, María V.
dc.contributor.authorGarcía-Bosch, N.
dc.contributor.authorRodríguez Ramos, Inmaculada
dc.contributor.authorGuerrero Ruíz, Antonio Ricardo
dc.contributor.orcidhttps://orcid.org/0000-0003-2834-0296
dc.contributor.orcidhttps://orcid.org/0000-0003-1848-5985
dc.date.accessioned2024-11-06T10:57:10Z
dc.date.available2024-11-06T10:57:10Z
dc.date.issued2023
dc.descriptionThe registered version of this article, first published in “Catalysis Today, Volume 420, 2023", is available online at the publisher's website: Elsevier, https://doi.org/10.1016/j.cattod.2023.01.024 La versión registrada de este artículo, publicado por primera vez en “Catalysis Today, Volume 420, 2023", está disponible en línea en el sitio web del editor: Elsevier, https://doi.org/10.1016/j.cattod.2023.01.024
dc.description.abstract1-butanol dehydration reaction has recently emerged as a sustainable route to produce butenes which can be further oligomerized to be applied as jet fuel. However, the high catalyst deactivation rates observed during this reaction due to coke deposition is still a pending matter. As promising catalysts for this reaction, we have supported two heteropolyacids (HPA), i.e. H4SiW12O40 (STA) and H3PW12O40 (TPA), on two commercial carbon materials: an activated carbon (AC) and a high surface area graphite (HSAG). Aiming to evaluate the role of HPA-support interactions, the STA was also dispersed over metallic oxides of different acidic nature, namely SiO2, Al2O3 and ZrO2. An exhaustive physicochemical characterization revealed that after the HPA dispersion thorough the support, the Keggin structure was maintained and an increase in the amount and strength of acid sites was provoked, but in different degree according to the HPA type and support’s nature. While the TPA-based catalysts developed less quantity of total acid sites, but higher strength than their STA-carbon counterparts, the STA/AC and TPA/AC samples exhibited a slight major amount of acid sites than STA/HSAG and TPA/HSAG. The HPA-support interactions have ultimately modulated to some extent the activity, selectivity, stability and regeneration ability of the synthesized catalysts, when applied in the gas phase butanol dehydration reaction at 275 °C. The higher STA decomposition temperature prompted by the graphitic support, among other factors, allowed the total regeneration of the highly active (39 mmolBuOH∙min−1∙ga.p) and n-butenes selective (>98 %) STA/HSAG catalyst by means of combustion of carbon deposits at 400 °C.en
dc.description.versionversión publicada
dc.identifier.citationJ.M. Conesa, M.V. Morales, N. García-Bosch, I. Rodríguez Ramos, A. Guerrero-Ruiz, Graphite supported heteropolyacid as a regenerable catalyst in the dehydration of 1-butanol to butenes, Catalysis Today, Volume 420, 2023, 114017, ISSN 0920-5861, https://doi.org/10.1016/j.cattod.2023.01.024
dc.identifier.doihttps://doi.org/10.1016/j.cattod.2023.01.024
dc.identifier.issn0920-5861
dc.identifier.urihttps://hdl.handle.net/20.500.14468/24262
dc.journal.issue114017
dc.journal.titleCatalysis Today
dc.journal.volume420
dc.language.isoen
dc.publisherELSEVIER
dc.relation.centerFacultades y escuelas::Facultad de Ciencias
dc.relation.departmentQuímica Inorgánica y Química Técnica
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.subject23 Química::2303 Química inorgánica
dc.subject.keywordsHeteropolyacids supported catalystses
dc.subject.keywordsAcid surface siteses
dc.subject.keywordsButanol dehydration, butene, catalyst deactivationes
dc.subject.keywordsActive site-support interactionses
dc.titleGraphite supported heteropolyacid as a regenerable catalyst in the dehydration of 1-butanol to butenesen
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dc.typejournal articleen
dspace.entity.typePublication
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