2026-05-31T17:45:01Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/238002026-02-03T11:01:55Zcom_10630_2254col_10630_37953

Torres-Olea, Benjamín Mérida-Robles, Sandra García-Sancho, Cristina Cecilia-Buenestado, Juan Antonio Maireles-Torres, Pedro Jesús 2022-03-03T13:10:10Z 2022-03-03T13:10:10Z 2020-08-04 https://hdl.handle.net/10630/23800 10.3390/catal10080878 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 ºC, 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)Ox catalyst with an Al:Zr molar ratio of 7:3, reaching 97% and 47%, respectively, at 150 ºC after 120 min. Under tested conditions, this catalyst retained most of its catalytic activity for four reuses. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Glucosa Aldehídos Furanos Productos químicos de la biomasa Catálisis heterogénea Oxido de aluminio Oxido de circonio Catalytic Activity of Mixed Al2O3-ZrO2 Oxides for Glucose Conversion into 5-Hydroxymethylfurfural journal article