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dc.contributor.authorBezerra, Rita de Cássia F.
dc.contributor.authorMota, Gabriela
dc.contributor.authorVidal, Ruth Maria B.
dc.contributor.authorVitor do Carmo, Jose
dc.contributor.authorSaraiva, Gilberto D.
dc.contributor.authorCampos, Adriana
dc.contributor.authorOliveira, Alcineia C.
dc.contributor.authorLang, Rossano
dc.contributor.authorOtubo, Larissa
dc.contributor.authorJiménez-Jiménez, José 
dc.contributor.authorRodríguez-Castellón, Enrique 
dc.date.accessioned2023-02-09T09:56:42Z
dc.date.available2023-02-09T09:56:42Z
dc.date.issued2022-12-09
dc.identifier.citationBezerra RdCF, Mota G, Vidal RMB, Carmo JVd, Saraiva GD, Campos A, Oliveira AC, Lang R, Otubo L, Jiménez Jiménez J, Rodríguez-Castellón E. Effect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Production. Catalysts. 2022; 12(12):1616. https://doi.org/10.3390/catal12121616es_ES
dc.identifier.urihttps://hdl.handle.net/10630/25936
dc.description.abstractA facile strategy for the design of porous supports was obtained by modifying the sol-gel method followed by the wet impregnation technique. In this respect, herein, the acidity of the γ-Al2O3 phase was modulated by adding basic MgO, La2O3 or ZnO promoters to form binary supported catalysts. The Ni and Co dispersion on the supports associated with their tunable acidity and morphologies resulted in highly porous supported alumina-based catalysts. The physicochemical properties of the solids were comprehensively investigated by XRD, textural properties, Raman and FTIR spectroscopy, SEM-EDS, TEM, EPR and XPS analyses. The catalytic performances in the esterification of glycerol in the presence of acetic acid (EG) for the acetins production were evaluated. The highly dispersed NiO and Co3O4 active species on binary porous supports produced synergistic effects appearing to be the reason for the activity of the solids in the EG reaction. Under the optimized reaction conditions, NiCo/MgO-Al2O3 was found to be a robust solid with superior catalytic performance and improved stability in four reaction cycles with 65.0% of glycerol conversion with an exclusive selectivity of 53% for triacetin. The presence of Co2+/Co3+ and Ni2+ strongly interacting with the spinel γ-Al2O3 and MgAl2O4 phases, the latter having a large number of lattice oxygen species, was considered another active component besides those of Ni and Co in the esterification of glycerol.es_ES
dc.description.sponsorshipThis work is supported by Funcap (Grant n° PS1-0186-00346.01.00/21). Financial assistance received from Ministerio de Ciencia e Innovación, Junta de Andalucía and FEDER is also thankfully acknowledged for funding project n° PID2021-126235OB-C32, UMA18-FEDERJA-126 and P20_00375. Partial funding for open access charge: Universidad de Málagaes_ES
dc.language.isoenges_ES
dc.publisherIOAP-MDPIes_ES
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectOxido de aluminioes_ES
dc.subject.otherPorous aluminaes_ES
dc.subject.otherSupportes_ES
dc.subject.otherEsterificationes_ES
dc.subject.otherGlyceroles_ES
dc.subject.otherBasic promoterses_ES
dc.titleEffect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Productiones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.centroFacultad de Cienciases_ES
dc.identifier.doihttps://doi.org/10.3390/catal12121616
dc.rights.ccAtribución 4.0 Internacional*
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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