Authors
Vincenzo Barbarossa, Francesco Barzagli, Fabrizio Mani, Sarah Lai, Piero Stoppioni, Giuseppina Vanga
Publication date
2013
Journal
RSC advances
Volume
3
Issue
30
Pages
12349-12355
Publisher
Royal Society of Chemistry
Description
An experimental study describes the reversible fixation of CO2 by non-aqueous solutions of 2-amino-2-methyl-1-propanol (AMP). The captured CO2 is stored in solution as AMP carbamate and alcohol carbonates in different relative amounts as a function of the CO2–AMP ratio. The identification and the quantification of the species in solution were obtained from 13C NMR spectroscopic analysis. The bench-scale experiments of CO2 fixation and solvent regeneration have been carried out in a continuous cycle where the CO2-loaded and regenerated solutions are continuously circulated between the desorber and absorber. The carbonated solutions are decomposed in the desorber at 80–90 °C to regenerate the free amine for its reuse, affording CO2 absorption efficiency over 90%. The replacement of water with an organic solvent and the relatively low temperature of the desorption-regeneration step, could have …
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