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http://hdl.handle.net/1843/57027
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DC Field | Value | Language |
---|---|---|
dc.creator | Fabiane Carvalho Ballotin | pt_BR |
dc.creator | Márcio José da Silva | pt_BR |
dc.creator | Ana Paula de Carvalho Teixeira | pt_BR |
dc.creator | Rochel Montero Lago | pt_BR |
dc.date.accessioned | 2023-07-26T18:10:29Z | - |
dc.date.available | 2023-07-26T18:10:29Z | - |
dc.date.issued | 2020 | - |
dc.citation.volume | 274 | pt_BR |
dc.citation.spage | 117799 | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.fuel.2020.117799 | pt_BR |
dc.identifier.issn | 0016-2361 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/1843/57027 | - |
dc.description.resumo | Herein, 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.sponsorship | CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico | pt_BR |
dc.description.sponsorship | FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais | pt_BR |
dc.description.sponsorship | CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | pt_BR |
dc.description.sponsorship | INCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio) | pt_BR |
dc.description.sponsorship | Outra Agência | pt_BR |
dc.language | eng | pt_BR |
dc.publisher | Universidade Federal de Minas Gerais | pt_BR |
dc.publisher.country | Brasil | pt_BR |
dc.publisher.department | ICX - DEPARTAMENTO DE QUÍMICA | pt_BR |
dc.publisher.initials | UFMG | pt_BR |
dc.relation.ispartof | Fuel | pt_BR |
dc.rights | Acesso Restrito | pt_BR |
dc.subject | Carbon acid catalysts | pt_BR |
dc.subject | Amphiphilic | pt_BR |
dc.subject | Emulsion | pt_BR |
dc.subject | Ketalization | pt_BR |
dc.subject.other | Dióxido de carbono | pt_BR |
dc.subject.other | Catalisadores | pt_BR |
dc.subject.other | Biodiesel | pt_BR |
dc.subject.other | Nanopartículas | pt_BR |
dc.subject.other | Ácido sulfúrico | pt_BR |
dc.subject.other | Carbono | pt_BR |
dc.title | Amphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalization | pt_BR |
dc.type | Artigo de Periódico | pt_BR |
dc.url.externa | https://www.sciencedirect.com/science/article/pii/S001623612030795X | pt_BR |
dc.identifier.orcid | https://orcid.org/0000-0003-2872-6690 | pt_BR |
dc.identifier.orcid | https://orcid.org/0000-0003-0060-0551 | pt_BR |
dc.identifier.orcid | https://orcid.org/0000-0002-4985-7502 | pt_BR |
dc.identifier.orcid | https://orcid.org/0000-0002-7145-6342 | pt_BR |
Appears in Collections: | Artigo de Periódico |
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