Supported nitrogen-modified Pd nanoparticles for the selective hydrogenation of 1-hexyne

Détails

Ressource 1Télécharger: Crespo-JCat-2011-AAM.pdf (183.01 [Ko])
Etat: Public
Version: Author's accepted manuscript
ID Serval
serval:BIB_5C45112843D9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Supported nitrogen-modified Pd nanoparticles for the selective hydrogenation of 1-hexyne
Périodique
Journal of Catalysis
Auteur(s)
Crespo-Quesada Micaela, Dykeman Ryan R., Laurenczy Gabor, Dyson Paul J., Kiwi-Minsker Lioubov
Statut éditorial
Publié
Date de publication
01/04/2011
Peer-reviewed
Oui
Volume
279
Numéro
1
Pages
66-74
Langue
anglais
Résumé
2,2′-Bipyridine (bipy) and an imidazolium-functionalized bipy ligand were used in the synthesis of palladium nanoparticles in water and in ionic liquid. The function of such ligands was twofold: first, as stabilizing agents to prevent the agglomeration of the nanoparticles during synthesis, and second, to act as permanent catalyst modifiers. The N-modified Pd nanoparticles were subsequently deposited onto Carbon Nanofiber-based structured supports and tested in the liquid-phase hydrogenation of 1-hexyne. The catalysts were found to be significantly more selective (up to 98.5% at 25% conversion) than a reference catalyst with non-modified Pd nanoparticles on the same support (88%). Moreover, the high selectivity was maintained up to full conversion, and thus, the over-hydrogenation was suppressed due to a site-blocking effect of the N-containing ligands. The imidazolium-functionalized bipy ligand was found to interact more strongly with the nanocarbon support reinforcing Pd anchoring and reducing leaching into the liquid media.
Mots-clé
Heterogeneous catalysis,Bipyridine ligands,Catalyst modifier,1-Hexyne hydrogenation,Palladium nanoparticles,Carbon nanofiber,Structured support,Ionic liquid
Web of science
Création de la notice
12/12/2017 15:49
Dernière modification de la notice
20/08/2019 15:14
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