Journal
JOURNAL OF CO2 UTILIZATION
Volume 2, Issue -, Pages 29-34Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jcou.2013.07.002
Keywords
CO2 catch and release; N-heterocyclic carbene; BMIm-BF4; Electrolysis; Cyclic voltammetry
Funding
- MIUR (Italy)
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According to the property of N-heterocyclic carbenes (NHCs) to yield NHC-CO2 adducts, a solution of NHCs in the parent room temperature ionic liquid (RTIL) as solvent may act as a system able to catch and release carbon dioxide cyclically and in mild conditions. The system has been set up and analyzed via simple electrochemical methodologies. NHCs have been generated by electrolysis of BMIm-BF4 (as solvent and parent of NHC) in the absence of any base and organic solvent. CO2 has been caught and released in every cycle by bubbling of CO2 in the system at 60 degrees C, heating and stirring at 120 degrees C, and subsequently cooling down to 60 degrees C. In a single series of 10 cycles, performed as a preliminary control, the system is able to catch and release 4 mol of CO2 per Faraday consumed in the electrolysis. (C) 2013 Elsevier Ltd. All rights reserved.
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