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http://hdl.handle.net/1843/57029| Tipo: | Artigo de Periódico |
| Título: | Solid acid catalysts based on sulfonated carbon nanostructures embedded in an amorphous matrix produced from bio-oil: esterification of oleic acid with methanol |
| Autor(es): | Fabiane Carvalho Ballotin Márcio José da Silva Rochel Montero Lago Ana Paula de Carvalho Teixeira |
| Resumo: | In this work, a solid acid catalyst based on different nanostructures, e.g. graphene, nanotube, nano-onions, nanographite, embedded in amorphous carbon matrix was used as a catalyst on esterification reaction of oleic acid and methanol. The materials were characterized by transmission electron microscopy, elemental analysis, thermogravimetric analysis coupled with mass spectrometry, surface area analyses and potentiometric titration showing the presence of sulfonic acid sites (0.02-0.30 mmol g−1) on the carbon structures. The obtained materials were used as catalysts for the esterification of oleic acid with methanol (1:10 M ratio) showing conversions of 95 %, using 2.5 wt % at 100 °C for 3 h. Reuse reactions showed that catalytic activity decreased to 20% after 4 uses, probably due to leaching or methylation of sulfonic groups. Activation energy of the esterification reaction was also calculated, e.g. 52 kJ mol−1. |
| Assunto: | Carbono Nanoestrutura Catalisadores Esterificação (Química) Biodiesel Metanol |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICX - DEPARTAMENTO DE QUÍMICA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1016/j.jece.2020.103674 |
| URI: | http://hdl.handle.net/1843/57029 |
| Data do documento: | 2020 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S2213343720300221 |
| metadata.dc.relation.ispartof: | Journal of Environmental Chemical Engineering |
| Aparece nas coleções: | Artigo de Periódico |
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