Catalytic Activity of Mixed Al2O3-ZrO2 Oxides for Glucose Conversion into 5-Hydroxymethylfurfural

Torres-Olea, Benjamín; Mérida-Morales, Sandra; García-Sancho, Cristina; Cecilia, Juan Antonio; Maireles-Torres, Pedro

doi:10.3390/catal10080878

Open AccessFeature PaperArticle

Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural

by

Benjamín Torres-Olea

,

Sandra Mérida-Morales

,

Cristina García-Sancho

^*

,

Juan Antonio Cecilia

and

Pedro Maireles-Torres

Departamento de Química Inorgánica, Cristalografía y Mineralogía (Unidad Asociada al ICP-CSIC), Facultad de Ciencias, Campus de Teatinos, Universidad de Málaga, 29071 Málaga, Spain

^*

Author to whom correspondence should be addressed.

Catalysts 2020, 10(8), 878; https://doi.org/10.3390/catal10080878

Submission received: 20 July 2020 / Revised: 31 July 2020 / Accepted: 31 July 2020 / Published: 4 August 2020

(This article belongs to the Special Issue Recent Advances in Catalytic Sustainable Processes in Biorefineries)

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Abstract

In the present work, a series of catalysts based on aluminum and zirconium oxides was studied for the transformation of glucose into 5-hydroxymethylfurfural. These catalysts were characterized by using experimental techniques, such as X-ray diffraction, N₂ adsorption–desorption at −196 °C, X-ray photoelectron spectroscopy, temperature-programmed desorption of NH₃ and CO₂, and scanning transmission electron microscopy. The catalytic behavior in glucose dehydration was evaluated in a water-methyl isobutyl ketone biphasic system, in the presence of CaCl₂, in order to minimize losses due to unwanted secondary reactions. High glucose conversion and 5-hydroxymethylfurfural (HMF) yield values were obtained in the presence of an Al(Zr)O_x catalyst with an Al:Zr molar ratio of 7:3, reaching 97% and 47%, respectively, at 150 °C after 120 min. Under tested conditions, this catalyst retained most of its catalytic activity for four reuses.

Keywords: glucose; 5-hydroxymethylfurfural; lignocellulosic biomass; heterogeneous catalysts; aluminum oxide; zirconium oxide

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MDPI and ACS Style

Torres-Olea, B.; Mérida-Morales, S.; García-Sancho, C.; Cecilia, J.A.; Maireles-Torres, P. Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural. Catalysts 2020, 10, 878. https://doi.org/10.3390/catal10080878

AMA Style

Torres-Olea B, Mérida-Morales S, García-Sancho C, Cecilia JA, Maireles-Torres P. Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural. Catalysts. 2020; 10(8):878. https://doi.org/10.3390/catal10080878

Chicago/Turabian Style

Torres-Olea, Benjamín, Sandra Mérida-Morales, Cristina García-Sancho, Juan Antonio Cecilia, and Pedro Maireles-Torres. 2020. "Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural" Catalysts 10, no. 8: 878. https://doi.org/10.3390/catal10080878

APA Style

Torres-Olea, B., Mérida-Morales, S., García-Sancho, C., Cecilia, J. A., & Maireles-Torres, P. (2020). Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural. Catalysts, 10(8), 878. https://doi.org/10.3390/catal10080878

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Catalytic Activity of Mixed Al₂O₃-ZrO₂ Oxides for Glucose Conversion into 5-Hydroxymethylfurfural

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