2026-06-03T04:49:50Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/237992026-02-03T10:54:45Zcom_10630_2254col_10630_37953

Oxidative Condensation of Furfural with Ethanol Using Pd-Based Catalysts: Influence of the Support Cecilia-Buenestado, Juan Antonio Jiménez-Gómez, Carmen Pilar Torres-Bujalance, Virginia García-Sancho, Cristina Moreno-Tost, Ramón Maireles-Torres, Pedro Jesús Furanos Productos de condensación (Química) Catalizadores de paladio PdO nanoparticles were deposited on several supports (β-zeolite, Al2O3, Fe2O3, MgO, and SiO2), which displayed different crystallinity, textural properties, and amount of acid and basic sites. These catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption–desorption isotherms at −196 °C, NH3 and CO2 thermoprogrammed desorption analyses (NH3- and CO2-TPD, and X-ray photoelectron spectroscopy (XPS). Pd-based catalysts were tested in the oxidative condensation of furfural with ethanol to obtain value-added chemicals. The catalytic results revealed high conversion values, although the presence of a high proportion of carbonaceous deposits, mainly in the case of the PdO supported on β-zeolite and Al2O3, is also noteworthy. The presence of basic sites led to a beneficial effect on the catalytic behavior, since the formation of carbonaceous deposits was minimized. Thus, the 2Pd-MgO (2 wt.% Pd) catalyst reached the highest yield of furan-2-acrolein (70%) after 3 h of reaction at 170 °C. This better catalytic performance can be explained by the high basicity of MgO, used as support, together with the large amount of available PdO, as inferred from XPS. 2022-03-03T12:15:16Z 2022-03-03T12:15:16Z 2022-03-03T12:15:16Z 2020-11-12 journal article https://hdl.handle.net/10630/23799 10.3390/catal10111309 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional MDPI