Autor según el artículo: Sanchez, Vladimir; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda;
Departamento: Química Física i Inorgànica
Autor/es de la URV: Cesteros Fernández, Yolanda / González Candela, Maria Dolores / Salagre Carnero, María Pilar / Sanchez Gonzaga, Vladimir Pablo
Palabras clave: Lewis Isomerization Green Glucose Fructose Efficient Conversion Clays Brønsted Bronsted Acidity 5-hydroxymethylfurfural
Resumen: 5-hydroxymethylfurfural (5-HMF) is an important platform molecule for the synthesis of high-added value products. Several synthesized clay materials, such as mesoporous hectorite and fluorohectorite, in addition to commercial montmorillonite K-10, have been acid modified by different methodologies to be applied as catalysts for the obtention of 5-HMF from glucose. The effects of the Bronsted and/or Lewis acidity, the reaction temperature and time, and the catalyst/glucose ratio on the conversion but especially on the selectivity to 5-HMF have been studied. By comparing the synthesized clays, the best selectivity to 5-HMF (36%) was obtained at 140 degrees C for 4 h with H-fluorohectorite because of the presence of strong Bronsted acid sites, although its conversion was the lowest (33%) due to its low amounts of Lewis acid sites. Different strategies, such as physical mixtures of montmorillonite K10, which contains high amounts of Lewis acid centers, with Amberlyst-15, which has high amounts of Bronsted acid sites, or the incorporation of rhenium compounds, were carried out. The best selectivity to 5-HMF (62%) was achieved with a mixture of 44 wt % Amberlyst-15 and 56 wt % of montmorillonite K10 for a 56% of conversion at 140 degrees C for 4 h. This proportion optimized the amount of Bronsted and Lewis acid sites in the catalyst under these reaction conditions.
Áreas temáticas: Engineering, chemical Engineering (miscellaneous) Engineering (all) Energy (miscellaneous) Energy (all) Chemical engineering (miscellaneous) Chemical engineering (all)
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: pilar.salagre@urv.cat mdolores.gonzalez@urv.cat yolanda.cesteros@urv.cat vladimir.sanchez@estudiants.urv.cat
Identificador del autor: 0000-0003-3257-2022 0000-0002-5439-9358
Fecha de alta del registro: 2024-03-13
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/2305-7084/6/4/57
URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Chemengineering. 6 (4):
Referencia de l'ítem segons les normes APA: Sanchez, Vladimir; Gonzalez, Maria Dolores; Salagre, Pilar; Cesteros, Yolanda; (2022). Acid-Modified Clays for the Catalytic Obtention of 5-Hydroxymethylfurfural from Glucose. Chemengineering, 6(4), -. DOI: 10.3390/chemengineering6040057
DOI del artículo: 10.3390/chemengineering6040057
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2022
Tipo de publicación: Journal Publications
Repositori URV