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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57029
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dc.creatorFabiane Carvalho Ballotinpt_BR
dc.creatorMárcio José da Silvapt_BR
dc.creatorRochel Montero Lagopt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.date.accessioned2023-07-26T19:08:42Z-
dc.date.available2023-07-26T19:08:42Z-
dc.date.issued2020-
dc.citation.volume8pt_BR
dc.citation.issue2pt_BR
dc.citation.spage103674pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.jece.2020.103674pt_BR
dc.identifier.issn2213-3437pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57029-
dc.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.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)pt_BR
dc.description.sponsorshipOutra Agênciapt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Environmental Chemical Engineeringpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCarbon nanostructurespt_BR
dc.subjectAcid catalystpt_BR
dc.subjectSulfonic groupspt_BR
dc.subjectEsterificationpt_BR
dc.subjectOleic acidpt_BR
dc.subjectBio-oilpt_BR
dc.subject.otherCarbonopt_BR
dc.subject.otherNanoestruturapt_BR
dc.subject.otherCatalisadorespt_BR
dc.subject.otherEsterificação (Química)pt_BR
dc.subject.otherBiodieselpt_BR
dc.subject.otherMetanolpt_BR
dc.titleSolid acid catalysts based on sulfonated carbon nanostructures embedded in an amorphous matrix produced from bio-oil: esterification of oleic acid with methanolpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S2213343720300221pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2872-6690pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0060-0551pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7145-6342pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
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