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Cover Picture: Improved Solvent Formulations for Efficient CO 2 Absorption and Low‐Temperature Desorption (ChemSusChem 9/2012)
Author(s) -
Barzagli Francesco,
Di Vaira Massimo,
Mani Fabrizio,
Peruzzini Maurizio
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201290036
Subject(s) - chemistry , desorption , methanol , solvent , piperazine , dimethyl carbonate , transesterification , aqueous solution , organic chemistry , amine gas treating , inorganic chemistry , adsorption
In their Full Paper on page 1724 ff., F. Mani et al. demonstrate that CO 2 absorption and amine regeneration can be successfully carried out in a closed cycle process based on 2‐amino‐2‐methyl‐1‐propanol and piperazine in 2‐ethoxyethanol. These solvents, by virtue of their rather low desorption temperature and thermal and oxidative stability, may reduce the high operational costs of the conventional CO 2 capture process based on aqueous amines. The pure CO 2 recovered from the desorption step can be easily converted into an alkyl carbonate via the intermediate 2‐amino‐2‐methyl‐1‐propanol carbamate and its reaction with an alcohol (methanol, ethanol, or ethylene glycol). The same reaction also occurs after replacing carbamate with the carbonate derivative of the protonated 2‐amino‐2‐methyl‐1‐propanol.