Selective hydrogenation over Pd nanoparticles supported on a pore-flow-through silica monolith microreactor with hierarchical porosity

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Títol: Selective hydrogenation over Pd nanoparticles supported on a pore-flow-through silica monolith microreactor with hierarchical porosity
Autors: Sachse, Alexander | Linares, Noemi | Barbaro, Pierluigi | Fajula, François | Galarneau, Anne
Grups d'investigació o GITE: Laboratorio de Nanotecnología Molecular (NANOMOL)
Centre, Departament o Servei: Universidad de Alicante. Departamento de Química Inorgánica
Paraules clau: Selective hydrogenation | Pd nanoparticles | Mesoporosity | Silica monolith | Hierarchical porosity
Àrees de coneixement: Química Inorgánica
Data de publicació: 2013
Editor: Royal Society of Chemistry
Citació bibliogràfica: Dalton Transactions. 2013, 42: 1378-1384. doi:10.1039/C2DT31690K
Resum: Well-dispersed Pd nanoparticles have been synthesized inside the mesoporosity of a silica monolith featuring hierarchical porosity of homogeneous interconnected macropores (4 microns) and mesopores (11 nm). These monoliths have been implemented as microreactors for selective hydrogenation reactions. Conversion and selectivity can be tuned by adjusting the flow rates of hydrogen and substrates. In the selective hydrogenation of cyclooctadiene, a conversion of 95% and a selectivity of 90% in the monohydrogenated product, constant over a period of 70 h, have been reached. These figures correspond to a productivity of 4.2 mmol s−1 g−1MonoSil (or 0.32 mol s−1 g−1Pd). In the stereoselective hydrogenation of 3-hexyn-1-ol a constant conversion of 85% was observed, with however moderate selectivity into the cis isomer, over a test period of 7 h. These results open the route to the synthesis of important chemicals and intermediates via safe and green processes.
Patrocinadors: The research leading to these results has received funding from the European Community’s Seventh Framework Program through the Marie-Curie Initial Training Network NANO-HOST (Grant Agreement ITN 215193-2).
URI: http://hdl.handle.net/10045/39431
ISSN: 1477-9226 (Print) | 1477-9234 (Online)
DOI: 10.1039/C2DT31690K
Idioma: eng
Tipus: info:eu-repo/semantics/article
Drets: © Royal Society of Chemistry 2013
Revisió científica: si
Versió de l'editor: http://dx.doi.org/10.1039/C2DT31690K
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