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Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites
https://orcid.org/0000-0001-5742-4822
Abstract Catalytic transfer hydrogenation is an alternative catalytic approach for the reduction of carbonyl groups, instead of the use of dihydrogen gas. In this sense, a series of catalysts has been prepared by thermal treatment of layered double hydroxides, hydrotalcite type, of Mg(II) and Fe(III), with different Mg/Fe molar ratios. The resulting mixture of metal oxides was characterized by X-ray diffraction, TEM, N2 adsorption-desorption, CO2-TPD, NH3-TPD and XPS, and then catalysts were tested in the Meenwein-Ponndorf-Verley (MPV) reduction of furfural to obtain furfuryl alcohol. The catalytic results show that the catalyst with a Mg/Fe molar ratio of 3 allows reaching the highest furfural conversion at a lower reaction time, with a FOL yield close to 90% after 6 h of reaction at 443 K. The detailed analysis of these catalysts also revealed that the basicity plays a more predominant role in the MPV reaction than acid sites.
Graphical abstract Display Omitted
Highligths MgO/Fe2O3 catalysts were obtained from their respective hydrotalcites. MgO/Fe2O3 catalysts were tested in the furfural hydrogenation reaction. The catalysts with Mg/Fe molar ratio:3 was the most active, obtaining furfuryl alcohol as product. The catalysts are prone to be deactivated by the blocking of their basic sites.
Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites
https://orcid.org/0000-0001-5742-4822
Abstract Catalytic transfer hydrogenation is an alternative catalytic approach for the reduction of carbonyl groups, instead of the use of dihydrogen gas. In this sense, a series of catalysts has been prepared by thermal treatment of layered double hydroxides, hydrotalcite type, of Mg(II) and Fe(III), with different Mg/Fe molar ratios. The resulting mixture of metal oxides was characterized by X-ray diffraction, TEM, N2 adsorption-desorption, CO2-TPD, NH3-TPD and XPS, and then catalysts were tested in the Meenwein-Ponndorf-Verley (MPV) reduction of furfural to obtain furfuryl alcohol. The catalytic results show that the catalyst with a Mg/Fe molar ratio of 3 allows reaching the highest furfural conversion at a lower reaction time, with a FOL yield close to 90% after 6 h of reaction at 443 K. The detailed analysis of these catalysts also revealed that the basicity plays a more predominant role in the MPV reaction than acid sites.
Graphical abstract Display Omitted
Highligths MgO/Fe2O3 catalysts were obtained from their respective hydrotalcites. MgO/Fe2O3 catalysts were tested in the furfural hydrogenation reaction. The catalysts with Mg/Fe molar ratio:3 was the most active, obtaining furfuryl alcohol as product. The catalysts are prone to be deactivated by the blocking of their basic sites.
Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites
https://orcid.org/0000-0001-5742-4822
Abstract Catalytic transfer hydrogenation is an alternative catalytic approach for the reduction of carbonyl groups, instead of the use of dihydrogen gas. In this sense, a series of catalysts has been prepared by thermal treatment of layered double hydroxides, hydrotalcite type, of Mg(II) and Fe(III), with different Mg/Fe molar ratios. The resulting mixture of metal oxides was characterized by X-ray diffraction, TEM, N2 adsorption-desorption, CO2-TPD, NH3-TPD and XPS, and then catalysts were tested in the Meenwein-Ponndorf-Verley (MPV) reduction of furfural to obtain furfuryl alcohol. The catalytic results show that the catalyst with a Mg/Fe molar ratio of 3 allows reaching the highest furfural conversion at a lower reaction time, with a FOL yield close to 90% after 6 h of reaction at 443 K. The detailed analysis of these catalysts also revealed that the basicity plays a more predominant role in the MPV reaction than acid sites.
Graphical abstract Display Omitted
Highligths MgO/Fe2O3 catalysts were obtained from their respective hydrotalcites. MgO/Fe2O3 catalysts were tested in the furfural hydrogenation reaction. The catalysts with Mg/Fe molar ratio:3 was the most active, obtaining furfuryl alcohol as product. The catalysts are prone to be deactivated by the blocking of their basic sites.
Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites
Maderuelo-Solera, R. (author) / López-Asensio, R. (author) / Cecilia, J.A. (author) / Jiménez-Gómez, C.P. (author) / García-Sancho, C. (author) / Moreno-Tost, R. (author) / Maireles-Torres, P. (author)
Applied Clay Science ; 183
2019-10-24
Article (Journal)
Electronic Resource
English
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