On the reasons for deactivation of titanate nanotubes with metals catalysts in the acetalization of glycerol with acetone

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dc.citation.volume334
dc.contributor.authorGomes, Igor S.
dc.contributor.authorde Carvalho, Davi C.
dc.contributor.authorOliveira, Alcineia C.
dc.contributor.authorRodriguez-Castellon, Enrique
dc.contributor.authorTehuacanero-Cuapa, Samuel
dc.contributor.authorFreire, Paulo T. C.
dc.contributor.authorFilho, Josue M.
dc.contributor.authorSaraiva, Gilberto D.
dc.contributor.authorde Sousa, Francisco F.
dc.contributor.authorLang, Rossano [UNIFESP]
dc.coverageLausanne
dc.date.accessioned2020-07-08T13:09:40Z
dc.date.available2020-07-08T13:09:40Z
dc.date.issued2018
dc.description.abstractPt-containing titanate nanotubes (PTNT) catalyst had PtOx and chlorined-Pt species dispersed on the alkali trititanate nanotube phase (TNT). This solid was morphologically and structurally stable during glycerol acetalization of glycerol with acetone. In contrast, a significant transformation of Ni2+ and Co3+/Co2+ surface species dispersed on TNT provoked morphological, textural and surface changes affecting the catalytic performance of these samples, as observed with the help of HRTEM, XPS, Raman and textural properties measurements. Leaching of Co and Ni species was identified as the main mechanism for the deactivation respectively on Co-containing titanate nanotubes (CTNT) and Ni-containing titanate nanotube (NTNT) catalysts. On the contrary, PTNT performed very well giving rise to 28% of conversion and 11% selectivity to solketal over three reaction cycles of 24 h. This was thanked to the suitable tuning of pore-structure and proper surface acidity of PTNT, resulting in a stable solid for the reaction.en
dc.description.affiliationUniv Fed Ceara, Dept Quim Analit & Fisicoquim, Campus Pici Bloco 940, Fortaleza, Ceara, Brazil
dc.description.affiliationUniv Malaga, Fac Ciencias, Dept Quim Inorgan, Malaga 29071, Spain
dc.description.affiliationUNAM, Inst Fis, Circuito Invest S-N,Ciudad Univ, Coyoacan 04510, DF, Mexico
dc.description.affiliationUniv Fed Ceara, Dept Fis, Campus Pici 922, Fortaleza, Ceara, Brazil
dc.description.affiliationUniv Estadual Ceara, Fac Educ Ciencias & Letras Sertao Cent, BR-63900000 Quixada, Brazil
dc.description.affiliationUniv Fed Sul & Sudeste Para, Campus Univ Maraba, BR-68505080 Maraba, Para, Brazil
dc.description.affiliationUniv Fed Sao Paulo UNIFESP, ICT, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo UNIFESP, ICT, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCAPES/FUNCAP [23038.008860/2013-92, 23038.007964/2012-07]
dc.description.sponsorshipCNPq
dc.description.sponsorshipMINECO [CTQ2015-68951-C3-3R]
dc.description.sponsorshipFEDER
dc.description.sponsorshipIDCAPES/FUNCAP: 23038.008860/2013-92, 23038.007964/2012-07]
dc.description.sponsorshipIDMINECO: CTQ2015-68951-C3-3R
dc.format.extent1927-1942
dc.identifierhttp://dx.doi.org/10.1016/j.cej.2017.11.112
dc.identifier.citationChemical Engineering Journal. Lausanne, v. 334, p. 1927-1942, 2018.
dc.identifier.doi10.1016/j.cej.2017.11.112
dc.identifier.issn1385-8947
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54127
dc.identifier.wosWOS:000418533400192
dc.language.isoeng
dc.publisherElsevier Science Sa
dc.relation.ispartofChemical Engineering Journal
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectTitanate nanotubesen
dc.subjectModificationen
dc.subjectDeactivationen
dc.subjectRamanen
dc.subjectAcetalizationen
dc.subjectGlycerolen
dc.titleOn the reasons for deactivation of titanate nanotubes with metals catalysts in the acetalization of glycerol with acetoneen
dc.typeinfo:eu-repo/semantics/article
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