Highly Performing Imidazolium Functionalized Carbon Nanohorns for the Conversion of Carbon Dioxide. Unprecedented Increase of
Academic Article
Publication Date:
2017
abstract:
Six new hybrid materials, constituted by carbon nanohorns
and highly cross-linked imidazolium salts, were easily synthesized via
a one-step procedure based on radical oligomerization of bisvinylimidazolium
salts (bVImiX) in the presence of pristine carbon
nanohorns (CNHs). Such 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 TON and productivity. Moreover, four catalysts were
investigated in recycling experiments. Two catalysts having an octyl
linker between the imidazolium units and bromide or iodide anion
showed no loss in activity after three cycles. Other two catalysts
having a p-xylyl linker and bromide anion and different CNHs/bVImiX
ratio showed an unprecedented increase of activity after recycling.
and highly cross-linked imidazolium salts, were easily synthesized via
a one-step procedure based on radical oligomerization of bisvinylimidazolium
salts (bVImiX) in the presence of pristine carbon
nanohorns (CNHs). Such 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 TON and productivity. Moreover, four catalysts were
investigated in recycling experiments. Two catalysts having an octyl
linker between the imidazolium units and bromide or iodide anion
showed no loss in activity after three cycles. Other two catalysts
having a p-xylyl linker and bromide anion and different CNHs/bVImiX
ratio showed an unprecedented increase of activity after recycling.
Iris type:
01.01 Articolo in rivista
Keywords:
Imidazolium Functionalized Carbon Nanohorns
List of contributors:
Liotta, LEONARDA FRANCESCA
Published in: