2026-05-28T08:00:36Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/237962026-02-03T10:51:51Zcom_10630_2254col_10630_37953

Porous SiO2 Nanospheres Modified with ZrO2 and Their Use in One- Pot Catalytic Processes to Obtain Value-Added Chemicals from Furfural Maderuelo-Solera, Rocío Richter, Stefan Jiménez-Gómez, Carmen Pilar García-Sancho, Cristina García-Mateos, Francisco José Rosas-Martínez, Juana María Moreno-Tost, Ramón Cecilia-Buenestado, Juan Antonio Maireles-Torres, Pedro Jesús Nanopartículas Alcoholes Catalizadores Reacciones químicas Porous SiO2 nanospheres have been modified with different proportion of ZrO2 to obtain catalysts with Si/Zr molar ratio between 2.5 and 30. These materials were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy, N2 adsorption-desorption at -196 ºC, X-ray photoelectron spectroscopy and pyridine and 2-6-dimethylpyridine thermoprogrammed desorption. The characterization of these catalysts reveals that the incorporation of a high proportion of Zr favors the formation of Lewis acid sites, which are implied in catalytic transfer hydrogenation processes, whereas the low Brönsted acidity promote dehydration reaction, in such a way that it is possible to obtain a wide range of products from FUR through consecutive reactions, such as furfuryl alcohol, i-propyl furfuryl ether, i-propyl levulinate and γ-valerolactone in a range of temperature of 110-170 ºC between 1-6 h of reaction. 2022-03-03T10:30:27Z 2022-03-03T10:30:27Z 2021 2021-11-26 journal article https://hdl.handle.net/10630/23796 https://doi.org/10.1021/acs.iecr.1c02848 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional American Chemical Society