Imidazolium-Functionalized Carbon Nanohorns for the Conversion of Carbon Dioxide: Unprecedented Increase of Catalytic Activity after Recycling

Carla Calabrese, Michelangelo Gruttadauria, Francesco Giacalone, Carla Calabrese, Esther Carbonell, Leonarda F. Liotta, Carmela Aprile, Carmela Aprile, Leonarda Francesca Liotta

Risultato della ricerca: Articlepeer review

31 Citazioni (Scopus)

Abstract

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.
Lingua originaleEnglish
pagine (da-a)1202-1209
Numero di pagine8
RivistaChemSusChem
Volume10
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
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