2026-05-30T07:06:36Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/263182026-02-03T11:03:55Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Torres-Olea, Benjamín
author
Fúnez Núñez, Inmaculada
author
García-Sancho, Cristina
author
Cecilia-Buenestado, Juan Antonio
author
Moreno-Tost, Ramón
author
Maireles-Torres, Pedro Jesús
2023-04-20T11:31:03Z
2023-04-20T11:31:03Z
2023
Benjamín Torres-Olea, Inmaculada Fúnez-Núñez, Cristina García-Sancho, Juan Antonio Cecilia, Ramón Moreno-Tost, Pedro Maireles-Torres, Influence of Lewis and Brønsted acid catalysts in the transformation of hexoses into 5-ethoxymethylfurfural, Renewable Energy, Volume 207, 2023, Pages 588-600, ISSN 0960-1481, https://doi.org/10.1016/j.renene.2023.03.036.
https://hdl.handle.net/10630/26318
https://doi.org/10.1016/j.renene.2023.03.036
Several sulfonated polymers, which are typical Brønsted acid catalysts, have been employed in the production of
two biofuels: 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) as main byproduct, and the catalytic results
have been attributed to their different chemical and morphological properties. The Purolite CT275DR attained
the best results from 5-hydroxymethylfurfural (HMF) with a 63% EMF yield after 16 h at 100 ◦C thanks to their
more abundant superficial acid sites. Moreover, Purolite CT275DR was able to efficiently dehydrate and etherify
fructose, with a total EMF plus EL yield of 65% after 24 h at 100 ◦C. When glucose or galactose were used as
feedstock, alumina was utilized to provide Lewis acid sites, necessary for the transformation of aldoses in so-
lution enabling a combined biofuel yield (EMF plus EL) of 40% from glucose after 24 h at 140 ◦C. With the study
of the role of each catalyst, both Brønsted and Lewis acid catalysts (resin and alumina, respectively) were
required to obtain considerable EMF yields from aldoses. The reutilization of the catalysts employed for 5 cat-
alytic runs demonstrated that Purolite CT275DR suffers no appreciable loss of activity, but alumina showed
progressive losses in activity in each cycle due to carbonaceous deposits and catalyst loss.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Catalizadores ácidos
Biocombustibles
Influence of Lewis and Brønsted acid catalysts in the transformation of hexoses into 5-ethoxymethylfurfural
journal article
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