Thomas R. Gohndrone, Dr. Tae Bum Lee, Dr. M. Aruni DeSilva, Dr. Mauricio Quiroz-Guzman, Prof. William F. Schneider and Prof. Joan F. Brennecke Competing Reactions of CO2 with Cations and Anions in Azolide Ionic Liquids ChemSusChem 7
Two different paths: Phosphonium azolide ionic liquids of interest for CO2 capture applications react with CO2 both through the normal anion channel and, at elevated temperatures, through a previously unrecognized cation channel. The cation channel involves a phosphonium ylide intermediate that is formed due to cation/anion interactions. This channel is suppressed with less-acidic ammonium cations.
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