Polyhedral Oligomeric Silsesquioxane Based Catalyst for the Efficient Synthesis of Cyclic Carbonates

Lucia A. Bivona, Ornella Fichera, Luca Fusaro, Francesco Giacalone, Mireia Buaki-Sogo, Michelangelo Gruttadauria, Carmela Aprile

Résultats de recherche: Contribution à un journal/une revueArticleRevue par des pairs

Résumé

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.

langue originaleAnglais
Pages (de - à)5000-5007
Nombre de pages8
journalCatal. Sci. Technol.
Volume5
Numéro de publication11
Les DOIs
Etat de la publicationPublié - 21 juil. 2015

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