Résumé
Six new hybrid materials composed of carbon nanohorns (CNHs) and highly cross-linked imidazolium salts were easily synthesized using a one-step procedure based on the radical oligomerization of bis-vinylimidazolium salts (bVImiX) in the presence of pristine CNHs. The hybrid materials were characterized and employed as the sole catalysts for the conversion of carbon dioxide into cyclic carbonate by reaction with epoxides. The solids displayed excellent turnover number and productivity. Moreover, four catalysts were investigated in recycling experiments. Two catalysts containing an octyl linker between the imidazolium units and a bromide or an iodide anion showed no loss in activity after three cycles. The other two catalysts containing a p-xylyl linker and a bromide anion and different CNHs/bVImiX ratios showed an unprecedented increase of activity after recycling.
langue originale | Anglais |
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Pages (de - à) | 1202-1209 |
Nombre de pages | 8 |
journal | ChemSusChem |
Volume | 10 |
Numéro de publication | 6 |
Date de mise en ligne précoce | 2017 |
Les DOIs | |
Etat de la publication | Publié - 22 mars 2017 |
Empreinte digitale
Examiner les sujets de recherche de « Imidazolium-Functionalized Carbon Nanohorns for the Conversion of Carbon Dioxide: Unprecedented Increase of Catalytic Activity after Recycling ». Ensemble, ils forment une empreinte digitale unique.Équipement
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Morphologie - Imagerie
Charles Nicaise (!!Manager) & Francesca Cecchet (!!Manager)
Plateforme technologique Morphologie, imagerieEquipement/installations: Plateforme technolgique
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Physico-chimie et caractérisation (PC2)
Johan Wouters (!!Manager) & Carmela Aprile (!!Manager)
Plateforme technologique Caracterisation physico-chimiquesEquipement/installations: Plateforme technolgique
Thèses de l'étudiant
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Design of novel imidazolium based nanostructures for sastainable catalytic applications
Auteur: Calabrese, C., 20 févr. 2019Superviseur: Aprile, C. (Promoteur), Gruttadauria, M. (Personne externe) (Copromoteur), Fusaro, L. (Jury), Giacalone, F. (Personne externe) (Jury) & Geronikaki, A. (Personne externe) (Jury)
Student thesis: Doc types › Docteur en Sciences
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