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Developing strategies for the preparation of Co-carbon catalysts involved in the free solvent selective synthesis of aza-heterocycles

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dc.contributor.authorGodino Ojer, Marina
dc.contributor.authorPérez Cadenas, Agustín Francisco
dc.contributor.authorPérez Mayoral, María Elena
dc.contributor.authorMartín Aranda, Rosa María
dc.date.accessioned2024-05-20T11:57:52Z
dc.date.available2024-05-20T11:57:52Z
dc.date.issued2018-02
dc.description.abstractWe report herein different series of new zero valent Cobalt nanocarbons, as doped and supported aerogels, able to efficiently catalyze the reaction of 2-amino-5-chlorobenzaldehyde and -ketoesters, via Friedländer reaction. The reaction works under solvent-free and mild conditions affording yields over 80% in only 30 min of reaction time. The catalysts could be reused almost during two consecutive cycles without almost any activity loss. A comparative study between supported and doped-carbon aerogels, as catalysts highly efficient in the reaction, has allowed to stablish the relationship between the catalyst structure and the catalytic performance. At this regard, different parameters such as carbonization temperature and surface chemistry on the aerogels under study have been also explored. As a result, although the carbon matrix is involved in the reaction, the Co(0) nanoparticles on the carbon surface are the predominant active catalytic species. Oxygen functionalities on the oxidized samples in the surroundings of Co(0) nanoparticles probably prevent the access of the reagents, notably decreasing their catalytic performance.en
dc.description.versionversión publicada
dc.identifier.doi10.1016/j.mcat.2017.11.037
dc.identifier.issn2468-8231
dc.identifier.urihttps://hdl.handle.net/20.500.14468/12763
dc.journal.titleMolecular Catalysis
dc.journal.volume445
dc.language.isoen
dc.publisherElsevier
dc.relation.centerFacultad de Ciencias
dc.relation.departmentQuímica Inorgánica y Química Técnica
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.keywordsCobalt(0)-doped carbon aerogels
dc.subject.keywordsNanocatalyst
dc.subject.keywordsAldol-based reactions
dc.subject.keywordsFriedländer reaction
dc.titleDeveloping strategies for the preparation of Co-carbon catalysts involved in the free solvent selective synthesis of aza-heterocycleses
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationa0e31477-6806-4f00-afdc-90c4136f232e
relation.isAuthorOfPublicationbafbca28-7ba9-4a29-b350-ebdcbc2381bb
relation.isAuthorOfPublication.latestForDiscoverya0e31477-6806-4f00-afdc-90c4136f232e
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