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https://locus.ufv.br//handle/123456789/21608
Tipo: | Artigo |
Título: | Direct conversion of glucose to 5-hydroxymethylfurfural using a mixture of niobic acid and niobium phosphate as a solid acid catalyst |
Autor(es): | Catrinck, Mariana N. Ribeiro, Emerson S. Monteiro, Robson S. Ribas, Rogério M. Barbosa, Márcio H.P. Teófilo, Reinaldo F. |
Abstract: | The aim of this work was to optimize the acid-catalyzed conversion of glucose into 5-hydroxymethylfurfural (HMF) in an aqueous medium using niobic acid (NbO), niobium phosphate (NbP) and a mixture of both solid acid catalysts. A simplex-centroid mixture design was applied to optimize the mixture ratio between NbO and NbP. A central composite design was applied to process optimization. The studied variables were temperature (T), time (t) and substrate to catalyst weight ratio (RS/C). The mixture design revealed excellent glucose conversion (55%) and HMF selectivity (56%) when the weight ratio between NbO and NbP was equal to 1:1. The experimental results demonstrate that a mixture of both solid acids provides a better combination of Brønsted and Lewis acidity for effective glucose dehydration into HMF than each individual catalyst. |
Palavras-chave: | Lignocellulosic biomass Heterogeneous catalysis Sugarcane Optimization process CCD design |
Editor: | Fuel |
Tipo de Acesso: | Elsevier Ltd. |
URI: | https://doi.org/10.1016/j.fuel.2017.08.035 http://www.locus.ufv.br/handle/123456789/21608 |
Data do documento: | 15-Dez-2017 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 1,13 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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