Use este identificador para citar ou linkar para este item: 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
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