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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/57027
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dc.creatorFabiane Carvalho Ballotinpt_BR
dc.creatorMárcio José da Silvapt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.creatorRochel Montero Lagopt_BR
dc.date.accessioned2023-07-26T18:10:29Z-
dc.date.available2023-07-26T18:10:29Z-
dc.date.issued2020-
dc.citation.volume274pt_BR
dc.citation.spage117799pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.fuel.2020.117799pt_BR
dc.identifier.issn0016-2361pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/57027-
dc.description.resumoHerein, an efficient amphiphilic carbon catalyst produced by the reaction of bio-oil with sulfuric acid was used for the first time for the solvent-free glycerol ketalization with 2-propanone for solketal production (2,2-dimethyl-1,3-dioxolane-4-methanol) at room temperature. The catalyst synthesis, described previously, led to an amphiphilic carbon due to hydrophobic nanostructures, e.g. graphene, nanotube, nano-onions, nanographite, embedded in an amorphous carbon containing high concentration of hydrophilic oxygen and sulfonic surface groups with strong acid sites (ca. 0.3 mmol g−1). The amphiphilic catalyst promoted the formation of an emulsion from the two immiscible phases, glycerol and 2-propanone, which had a strong effect on the reaction interface and solketal yield. Glycerol ketalization at 25 °C and solvent-free showed conversions higher than 90%, using 0.6 wt% catalyst, 1:10 glycerol:2-propanone after 2 h. The catalyst can be recovered and reused four times without any significant activity loss.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.ispartofFuelpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectCarbon acid catalystspt_BR
dc.subjectAmphiphilicpt_BR
dc.subjectEmulsionpt_BR
dc.subjectKetalizationpt_BR
dc.subject.otherDióxido de carbonopt_BR
dc.subject.otherCatalisadorespt_BR
dc.subject.otherBiodieselpt_BR
dc.subject.otherNanopartículaspt_BR
dc.subject.otherÁcido sulfúricopt_BR
dc.subject.otherCarbonopt_BR
dc.titleAmphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalizationpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S001623612030795Xpt_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/0000-0002-4985-7502pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7145-6342pt_BR
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