Solid acid catalysts based on sulfonated carbon nanostructures embedded in an amorphous matrix produced from bio-oil: esterification of oleic acid with methanol

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dc.creatorFabiane Carvalho Ballotin
dc.creatorMárcio José da Silva
dc.creatorRochel Montero Lago
dc.creatorAna Paula de Carvalho Teixeira
dc.date.accessioned2023-07-26T19:08:42Z
dc.date.accessioned2025-09-09T00:15:47Z
dc.date.available2023-07-26T19:08:42Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1016/j.jece.2020.103674
dc.identifier.issn2213-3437
dc.identifier.urihttps://hdl.handle.net/1843/57029
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Environmental Chemical Engineering
dc.rightsAcesso Restrito
dc.subjectCarbono
dc.subjectNanoestrutura
dc.subjectCatalisadores
dc.subjectEsterificação (Química)
dc.subjectBiodiesel
dc.subjectMetanol
dc.subject.otherCarbon nanostructures
dc.subject.otherAcid catalyst
dc.subject.otherSulfonic groups
dc.subject.otherEsterification
dc.subject.otherOleic acid
dc.subject.otherBio-oil
dc.titleSolid acid catalysts based on sulfonated carbon nanostructures embedded in an amorphous matrix produced from bio-oil: esterification of oleic acid with methanol
dc.typeArtigo de periódico
local.citation.issue2
local.citation.spage103674
local.citation.volume8
local.description.resumoIn this work, a solid acid catalyst based on different nanostructures, e.g. graphene, nanotube, nano-onions, nanographite, embedded in amorphous carbon matrix was used as a catalyst on esterification reaction of oleic acid and methanol. The materials were characterized by transmission electron microscopy, elemental analysis, thermogravimetric analysis coupled with mass spectrometry, surface area analyses and potentiometric titration showing the presence of sulfonic acid sites (0.02-0.30 mmol g−1) on the carbon structures. The obtained materials were used as catalysts for the esterification of oleic acid with methanol (1:10 M ratio) showing conversions of 95 %, using 2.5 wt % at 100 °C for 3 h. Reuse reactions showed that catalytic activity decreased to 20% after 4 uses, probably due to leaching or methylation of sulfonic groups. Activation energy of the esterification reaction was also calculated, e.g. 52 kJ mol−1.
local.identifier.orcidhttps://orcid.org/0000-0003-2872-6690
local.identifier.orcidhttps://orcid.org/0000-0003-0060-0551
local.identifier.orcidhttps://orcid.org/0000-0002-7145-6342
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S2213343720300221

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