Amphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalization

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dc.creatorFabiane Carvalho Ballotin
dc.creatorMárcio José da Silva
dc.creatorAna Paula de Carvalho Teixeira
dc.creatorRochel Montero Lago
dc.date.accessioned2023-07-26T18:10:29Z
dc.date.accessioned2025-09-09T00:03:46Z
dc.date.available2023-07-26T18:10:29Z
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.fuel.2020.117799
dc.identifier.issn0016-2361
dc.identifier.urihttps://hdl.handle.net/1843/57027
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofFuel
dc.rightsAcesso Restrito
dc.subjectDióxido de carbono
dc.subjectCatalisadores
dc.subjectBiodiesel
dc.subjectNanopartículas
dc.subjectÁcido sulfúrico
dc.subjectCarbono
dc.subject.otherCarbon acid catalysts
dc.subject.otherAmphiphilic
dc.subject.otherEmulsion
dc.subject.otherKetalization
dc.titleAmphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalization
dc.typeArtigo de periódico
local.citation.spage117799
local.citation.volume274
local.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.
local.identifier.orcidhttps://orcid.org/0000-0003-2872-6690
local.identifier.orcidhttps://orcid.org/0000-0003-0060-0551
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.identifier.orcidhttps://orcid.org/0000-0002-7145-6342
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S001623612030795X

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