RT Journal Article
T1 Influence of Lewis and Brønsted acid catalysts in the transformation of hexoses into 5-ethoxymethylfurfural
A1 Torres-Olea, Benjamín
A1 Fúnez Núñez, Inmaculada
A1 García-Sancho, Cristina
A1 Cecilia-Buenestado, Juan Antonio
A1 Moreno-Tost, Ramón
A1 Maireles-Torres, Pedro Jesús
K1 Catalizadores ácidos
K1 Biocombustibles
AB Several sulfonated polymers, which are typical Brønsted acid catalysts, have been employed in the production oftwo biofuels: 5-ethoxymethylfurfural (EMF) and ethyl levulinate (EL) as main byproduct, and the catalytic resultshave been attributed to their different chemical and morphological properties. The Purolite CT275DR attainedthe best results from 5-hydroxymethylfurfural (HMF) with a 63% EMF yield after 16 h at 100 ◦C thanks to theirmore abundant superficial acid sites. Moreover, Purolite CT275DR was able to efficiently dehydrate and etherifyfructose, with a total EMF plus EL yield of 65% after 24 h at 100 ◦C. When glucose or galactose were used asfeedstock, 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 studyof the role of each catalyst, both Brønsted and Lewis acid catalysts (resin and alumina, respectively) wererequired 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 showedprogressive losses in activity in each cycle due to carbonaceous deposits and catalyst loss.
PB Elsevier
YR 2023
FD 2023
LK https://hdl.handle.net/10630/26318
UL https://hdl.handle.net/10630/26318
LA eng
NO 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.
NO Funding for open access charge: Universidad de Málaga / CBUAThis research was funded by the Spanish Ministry of Innovation,Science and Universities (RTI2018-094918-B-C44), FEDER (EuropeanUnion) funds (RTI2018-094918-B-C44 and UMA18-FEDERJA-171) andMalaga University. Authors thank to Universidad de M ́alaga/CBUA forfunding for open access charge. C.G.S. acknowledges FEDER funds forher postdoctoral contract (UMA18-FEDERJA-171). B.T.O. acknowledgesthe Ministerio de Universidades for his predoctoral contract (FPU20/02334)
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 5 mar 2026