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

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)5000-5007
Number of pages8
JournalCatal. Sci. Technol.
Volume5
Issue number11
DOIs
Publication statusPublished - 21 Jul 2015

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