2026-06-07T04:54:25Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/310602026-02-03T11:15:09Zcom_10630_2254col_10630_37953

00925njm 22002777a 4500 dc Valdivieso-Vera, Daniel Alejandro author Flores-Escamilla, Gerardo Antonio author Cano-Gómez, José Julián author Barroso-Martín, Isabel author Rodríguez-Castellón, Enrique author Santos-López, Iván Alonso author Guerrero-Pérez, María Olga author 2024 The present study optimizes Cu-supported catalysts on hydrotalcite for the synthesis of n-butanol whose interest is in its use as biofuel, due to its superior performance in comparison with other short-chain alcohols. The catalytic performance was improved by adding Nb to the catalytic formulation. In this way, several Cu-Nb catalysts supported on hydrotalcites (Mg/Al) with different Nb loadings were synthesized by incipient wetness impregnation and characterized by H2 temperature-programmed reduction, X-ray diffraction, N2 physisorption, CO2 and NH3 thermo-programmed desorption and X-ray photoelectron spectroscopy. It was shown that the incorporation of Nb promoted a suitable balance between the acid-basic and redox sites, modulating the Cu0/Cu+ dehydrogenation/hydrogenation properties for the n-BuOH production. The synthesis of multiple value-added products (n-BuOH, acetaldehyde, ethyl acetate, and 1-hexanol) was achieved in both the liquid (at 180 ºC) and gas phase (150 350 ºC), where it was demonstrated that both the n-BuOH selectivity and ethanol con- version improved with the Nb addition. The performance of the catalysts under time on stream and their recycling is also described. Valdivieso-Vera, D. A., Flores-Escamilla, G. A., Cano-Gómez, J. J., Barroso-Martín, I., Rodríguez-Castellón, E., Santos-López, I. A., & Guerrero-Pérez, M. O. (2024). Effect of Nb as dopant of hydrotalcite catalysts during the ethanol condensation to optimize n-Butanol production. Catalysis Today, 433. https://hdl.handle.net/10630/31060 https://doi.org/10.1016/j.cattod.2024.114658 Catálisis Catalizadores Effect of Nb as dopant of hydrotalcite catalysts during the ethanol condensation to optimize n-Butanol production