A polyhedral oligomeric silsesquioxane-based catalyst for the efficient synthesis of cyclic carbonates
| Autor: | Luca Fusaro, Michelangelo Gruttadauria, Carmela Aprile, Ornella Fichera, Francesco Giacalone, Mireia Buaki-Sogo, Lucia Anna Bivona |
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| Přispěvatelé: | Bivona, LA, Fichera, O, Fusaro, L, Giacalone, F, Buaki-Sogo, M, Gruttadauria, M, Aprile, C |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Inorganic chemistry
Infrared spectroscopy Settore CHIM/06 - Chimica Organica Carbon-13 NMR silsesquioxane Cyclic Carbonate Mass spectrometry Chloride Catalysis Silsesquioxane Ionic Liquid Catalysi chemistry.chemical_compound chemistry Yield (chemistry) Polymer chemistry medicine Selectivity medicine.drug |
| Popis: | Polyhedral oligomeric silsesquioxane functionalized with imidazolium chloride peripheries (POSS-Imi) was successfully synthesized through a novel synthesis protocol. The solid was extensively characterized via1H NMR, 13C NMR and IR spectroscopy as well as combustion chemical analysis, mass spectrometry and transmission electron microscopy. Moreover, an in-depth investigation through 29Si NMR was performed. POSS-Imi was used for the first time as a catalyst for the conversion of CO2 and epoxides into cyclic carbonates with excellent results in terms of both yield and selectivity. The catalyst displayed improved catalytic performance with respect to unsupported 1-butyl-3-methylimidazolium chloride. The enhanced activity was ascribed to the proximity effect generated by the increased local concentration of imidazolium species surrounding the inorganic silsesquioxane core. |
| Databáze: | OpenAIRE |
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