2026-06-02T12:45:41Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/238862026-02-03T10:54:02Zcom_10630_2254col_10630_37953

Synthesis of Porous Clay Heterostructures Modified with SiO2–ZrO2 Nanoparticles for the Valorization of Furfural in One-Pot Process Es Sih, Salima Cecilia-Buenestado, Juan Antonio Jiménez-Gómez, Carmen Pilar García-Sancho, Cristina García-Mateos, Francisco José Rosas-Martínez, Juana María Moreno-Tost, Ramón Franco-Duro, Francisco Ignacio Maireles-Torres, Pedro Jesús Arcilla The layered structure of two smectites (montmorillonite and saponite) are modified by the insertion of SiO2–ZrO2 nanoparticles, with a Si/Zr molar ratio of 5, to form porous clay heterostructures (PCHs). These PCHs exhibit a clear improvement of the textural and acid properties in comparison to the starting clays, due to the formation of a pillared structure and the presence of Zr species, which provide an increase in the amount of Lewis acid sites. These materials are studied in one-pot catalytic processes to transform furfural into valuable products, such as furfuryl alcohol, alkyl furfuryl ethers, alkyl levulinates or γ-valerolactone, depending on the experimental conditions. Thus, the use of milder reaction temperature (110 °C) favors the formation of furfuryl alcohol and alkyl furfuryl ethers, while higher temperatures (170 °C) promote the formation of alkyl levulinate and γ-valerolactone, as well as an increase in nondetected products associated to the formation of humins due to the polymerization of furfural and/or furfuryl alcohol. 2022-03-22T13:26:30Z 2022-03-22T13:26:30Z 2022-03-22T13:26:30Z 2022 journal article Essih, Salima et al. (2022) “Synthesis of Porous Clay Heterostructures Modified with SiO 2-ZrO 2 Nanoparticles for the Valorization of Furfural in One-Pot Process,” Advanced Sustainable Systems [Preprint]. doi:10.1002/adsu.202100453. https://hdl.handle.net/10630/23886 10.1002/adsu.202100453 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional Wiley-VCH GmbH