New approach to dehydration of xylose to 2-furfuraldehyde using a mesoporous niobium-based catalyst.

• Autor(a) principal: Gabriel Filho, Jose Balena
• Data de Publicação: 2020
• Outros Autores: Oliveira, Victor, Souza, Talita Evelyn de, Padula, Izabela, Oliveira, Luiz Carlos Alves de, Gurgel, Leandro Vinícius Alves, Baeta, Bruno Eduardo Lobo, Silva, Adilson Cândido da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFOP
• Texto Completo: http://www.repositorio.ufop.br/jspui/handle/123456789/14155; https://doi.org/10.1021/acsomega.0c01547

Furfural chemistry is one of the most promising platforms directly derived from lignocellulose biomass. In this study, a niobium-based catalyst (mNb-bc) was synthesized by a new fast and simple method. This new method uses microemulsion to obtain a catalyst with a high specific surface area (340 m2 g−1 ), defined mesoporosity, and high acidity (65 μmol g−1 ). Scanning electron microscopy revealed that mNb-bc has a rough surface. The mNb-bc was used to catalyze the conversion reaction of xylose into 2-furfuraldehyde in a monophasic system using water as a green solvent. This reaction was investigated using a 23 experimental design by varying the temperature, time, and catalyst-to-xylose ratio (CXR). The responses evaluated were xylose conversion (Xc), reaction yield (Y), and selectivity to 2- furfuraldehyde (S). The optimized reaction conditions were used to evaluate the reaction kinetics. At milder reaction conditions of 140 °C, 2 h, and a CXR of 10%, mNb-bc led to an Xc value of 41.2%, an S value of 77.1%, and a Y value of 31.8%.