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http://hdl.handle.net/1843/57027| Type: | Artigo de Periódico |
| Title: | Amphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalization |
| Authors: | Fabiane Carvalho Ballotin Márcio José da Silva Ana Paula de Carvalho Teixeira Rochel Montero Lago |
| Abstract: | 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. |
| Subject: | Dióxido de carbono Catalisadores Biodiesel Nanopartículas Ácido sulfúrico Carbono |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE QUÍMICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.fuel.2020.117799 |
| URI: | http://hdl.handle.net/1843/57027 |
| Issue Date: | 2020 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S001623612030795X |
| metadata.dc.relation.ispartof: | Fuel |
| Appears in Collections: | Artigo de Periódico |
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