An alternative to hydrogenation processes. Electrocatalytic hydrogenation of benzophenone
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Título: | An alternative to hydrogenation processes. Electrocatalytic hydrogenation of benzophenone |
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Autor/es: | Mozo Mulero, Cristina | Sáez, Alfonso | Iniesta, Jesus | Montiel, Vicente |
Grupo/s de investigación o GITE: | Electroquímica Aplicada y Electrocatálisis |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Benzophenone | Diphenylmethanol | Electrocatalytic hydrogenation | Palladium nanoparticles | Polymer electrolyte membrane |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | 1-mar-2018 |
Editor: | Beilstein-Institut |
Cita bibliográfica: | Beilstein Journal of Organic Chemistry. 2018, 14: 537-546. doi:10.3762/bjoc.14.40 |
Resumen: | The electrocatalytic hydrogenation of benzophenone was performed at room temperature and atmospheric pressure using a polymer electrolyte membrane electrochemical reactor (PEMER). Palladium (Pd) nanoparticles were synthesised and supported on a carbonaceous matrix (Pd/C) with a 28 wt % of Pd with respect to carbon material. Pd/C was characterised by transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Cathodes were prepared using Pd electrocatalytic loadings (LPd) of 0.2 and 0.02 mg cm−2. The anode consisted of hydrogen gas diffusion for the electrooxidation of hydrogen gas, and a 117 Nafion exchange membrane acted as a cationic polymer electrolyte membrane. Benzophenone solution was electrochemically hydrogenated in EtOH/water (90/10 v/v) plus 0.1 M H2SO4. Current densities of 10, 15 and 20 mA cm−2 were analysed for the preparative electrochemical hydrogenation of benzophenone and such results led to the highest fractional conversion (XR) of around 30% and a selectivity over 90% for the synthesis of diphenylmethanol upon the lowest current density. With regards to an increase by ten times the Pd electrocatalytic loading the electrocatalytic hydrogenation led neither to an increase in fractional conversion nor to a change in selectivity. |
Patrocinador/es: | Authors thank the Ministerio de Economia y Competitividad MINECO, Spain for its financial support by the research projects CTQ2013-48280-C3-3-R and CTQ2016-76231-C2-2-R. |
URI: | http://hdl.handle.net/10045/74699 |
ISSN: | 1860-5397 |
DOI: | 10.3762/bjoc.14.40 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2018 Mozo Mulero et al.; licensee Beilstein-Institut. This is an Open Access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3762/bjoc.14.40 |
Aparece en las colecciones: | INV - LEQA - Artículos de Revistas |
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