Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides

Several layered double hydroxides (LDHs) with general chemical composition (Cu,Zn)1-xAlx(OH)2(CO3)x/2 mH2O have been synthesized by the co-precipitation method, maintaining a (M2+/M3+) molar ratio of 3, and varying the Cu2+/Zn2+ molar ratio between 0.2 and 6.0. After calcination and reduction steps,...

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Autores principales: Bertolini, Guillermo Ramón, Jiménez Gómez, Carmen P., Cecilia, Juan Antonio, Maireles Torres, Pedro
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Química
Layered double hydroxides
Cu-based catalysts
Cu/ZnO/Al2O3
Furfural
Furfuryl alcohol
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/118919
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-118919
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Layered double hydroxides
Cu-based catalysts
Cu/ZnO/Al2O3
Furfural
Furfuryl alcohol
spellingShingle Química
Layered double hydroxides
Cu-based catalysts
Cu/ZnO/Al2O3
Furfural
Furfuryl alcohol
Bertolini, Guillermo Ramón
Jiménez Gómez, Carmen P.
Cecilia, Juan Antonio
Maireles Torres, Pedro
Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
topic_facet Química
Layered double hydroxides
Cu-based catalysts
Cu/ZnO/Al2O3
Furfural
Furfuryl alcohol
description Several layered double hydroxides (LDHs) with general chemical composition (Cu,Zn)1-xAlx(OH)2(CO3)x/2 mH2O have been synthesized by the co-precipitation method, maintaining a (M2+/M3+) molar ratio of 3, and varying the Cu2+/Zn2+ molar ratio between 0.2 and 6.0. After calcination and reduction steps, Cu/ZnO/Al2O3 catalysts were synthesized. These catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), H2 thermoprogrammed reduction (H2-TPR), N2 adsorption-desorption at -196 °C, N2O titration, X-ray photoelectron miscroscopy (XPS), NH3-thermoprogramed desorption (NH3-TPD) and CO2- thermoprogrammed desorption (CO2-TPD). The characterization data revealed that these catalysts are mainly meso-and macroporous, where Cu, ZnO and Al2O3 are well dispersed. The catalytic results show that these catalysts are active in the gas-phase hydrogenation of furfural, being highly selective to furfuryl alcohol (FOL) and reaching the highest FOL yield for the catalyst with a Cu2+/Zn2+ molar ratio of 1. In an additional study, the influence of the aging time on the synthesis of the LDHs was also evaluated. The catalytic data revealed that the use of shorter aging time in the formation of the LDH has a beneficial effect on the catalytic behavior, since more disordered structures with a higher amount of available Cu sites is obtained, leading to a higher yield towards FOL (71% after 5 h of time-on-stream at 210 °C).
format Articulo
Articulo
author Bertolini, Guillermo Ramón
Jiménez Gómez, Carmen P.
Cecilia, Juan Antonio
Maireles Torres, Pedro
author_facet Bertolini, Guillermo Ramón
Jiménez Gómez, Carmen P.
Cecilia, Juan Antonio
Maireles Torres, Pedro
author_sort Bertolini, Guillermo Ramón
title Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
title_short Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
title_full Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
title_fullStr Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
title_full_unstemmed Gas-Phase Hydrogenation of Furfural to Furfuryl Alcohol over Cu-ZnO-Al2O3 Catalysts Prepared from Layered Double Hydroxides
title_sort gas-phase hydrogenation of furfural to furfuryl alcohol over cu-zno-al2o3 catalysts prepared from layered double hydroxides
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/118919
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