Catalytic performance of texturally improved Al-Mg mixed oxides derived from emulsion-synthesized hydrotalcites

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dc.contributor.authorPetrolini, Davi D. [UNESP]
dc.contributor.authorDa Silva Neto, Alano V.
dc.contributor.authorUrquieta-González, Ernesto A.
dc.contributor.authorPulcinelli, Sandra H. [UNESP]
dc.contributor.authorSantilli, Celso V. [UNESP]
dc.contributor.authorMartins, Leandro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2018-12-11T17:35:42Z
dc.date.available2018-12-11T17:35:42Z
dc.date.issued2018-01-01
dc.description.abstractMixed oxides of aluminum and magnesium derived from hydrotalcites were prepared by means of a sol-gel method mediated by an emulsified sol as pore template. The emulsion consisted of ethanol as the continuous phase and n-dodecane droplets as the dispersed phase, which was stabilized by the presence of the surfactant Pluronic P123. The use of such an emulsion was essential for obtaining materials with a porous structure that were assessed by mercury intrusion porosimetry and nitrogen physisorption. Additional characterization by NH3 and CO2 temperature programmed desorption confirmed that despite the enhancement of their textural properties, the number of acid and base sites was reduced in comparison to a reference and conventionally prepared Al-Mg mixed oxide, as a consequence of the depletion of surface hydroxyls during condensation of the precursors around the nonpolar droplets of the emulsion. Catalytic conversion of 2-propanol under conditions of controlled mass and heat diffusion on the texturally improved Al-Mg mixed oxides evidenced the preparation of a more effective catalyst than the poorly porous reference.en
dc.description.affiliationInstituto de Química UNESP-Univ. Estadual Paulista, Rua Prof. Francisco Degni 55
dc.description.affiliationCentro de Pesquisas em Materiais Avançados e Energia Univ. Federal de São Carlos, Rodovia Washington Luis, km 235
dc.description.affiliationUnespInstituto de Química UNESP-Univ. Estadual Paulista, Rua Prof. Francisco Degni 55
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: #2013/01328-0
dc.description.sponsorshipIdFAPESP: #2015/05321-5
dc.description.sponsorshipIdCNPq: #304698/2014-8
dc.format.extent6039-6046
dc.identifierhttp://dx.doi.org/10.1039/c7ra13270k
dc.identifier.citationRSC Advances, v. 8, n. 11, p. 6039-6046, 2018.
dc.identifier.doi10.1039/c7ra13270k
dc.identifier.file2-s2.0-85041713812.pdf
dc.identifier.issn2046-2069
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.scopus2-s2.0-85041713812
dc.identifier.urihttp://hdl.handle.net/11449/179572
dc.language.isoeng
dc.relation.ispartofRSC Advances
dc.relation.ispartofsjr0,863
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.titleCatalytic performance of texturally improved Al-Mg mixed oxides derived from emulsion-synthesized hydrotalcitesen
dc.typeArtigo
unesp.author.lattes5584298681870865[5]
unesp.author.orcid0000-0002-8356-8093[5]

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Artigos - Físico Química - IQ