Use este identificador para citar o ir al link de este elemento: http://hdl.handle.net/1843/57027
Tipo: Artigo de Periódico
Título: Amphiphilic acid carbon catalysts produced by bio-oil sulfonation for solvent-free glycerol ketalization
Autor(es): Fabiane Carvalho Ballotin
Márcio José da Silva
Ana Paula de Carvalho Teixeira
Rochel Montero Lago
Resumen: 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.
Asunto: Dióxido de carbono
Catalisadores
Biodiesel
Nanopartículas
Ácido sulfúrico
Carbono
Idioma: eng
País: Brasil
Editor: Universidade Federal de Minas Gerais
Sigla da Institución: UFMG
Departamento: ICX - DEPARTAMENTO DE QUÍMICA
Tipo de acceso: Acesso Restrito
Identificador DOI: https://doi.org/10.1016/j.fuel.2020.117799
URI: http://hdl.handle.net/1843/57027
Fecha del documento: 2020
metadata.dc.url.externa: https://www.sciencedirect.com/science/article/pii/S001623612030795X
metadata.dc.relation.ispartof: Fuel
Aparece en las colecciones:Artigo de Periódico

archivos asociados a este elemento:
no existem archivos asociados a este elemento.


Los elementos en el repositorio están protegidos por copyright, con todos los derechos reservados, salvo cuando es indicado lo contrario.