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Issue 10, 2011
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Steric hindrance-induced zwitterionic carbonates from alkanolamines and CO2: highly efficient CO2 absorbents

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Abstract

Sterically hindered amines such as 2-[(1,1-dimethylethyl)amino]ethanol (TBAE) and 1-[(1,1-dimethylethyl)amino]-2-propanol (TBAP) were found to reversibly interact with CO2 in a 1 : 1 molar ratio exclusively through the hydroxyl group, producing zwitterionic carbonate species, which lose CO2 at considerably lower temperatures than the CO2-adducts of other alkanolamines including monoethanolamine and diethanolamine. The formation of zwitterionic carbonate species from TBAE and TBAP was supported by spectroscopic and computational studies.

Graphical abstract: Steric hindrance-induced zwitterionic carbonates from alkanolamines and CO2: highly efficient CO2 absorbents

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Article information


Submitted
23 May 2011
Accepted
02 Aug 2011
First published
01 Sep 2011

Energy Environ. Sci., 2011,4, 4284-4289
Article type
Paper

Steric hindrance-induced zwitterionic carbonates from alkanolamines and CO2: highly efficient CO2 absorbents

J. Im, S. Y. Hong, Y. Cheon, J. Lee, J. S. Lee, H. S. Kim, M. Cheong and H. Park, Energy Environ. Sci., 2011, 4, 4284
DOI: 10.1039/C1EE01801A

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