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Precipitating non-aqueous amine systems for absorption of carbon dioxide using 2-amino-2-methyl-1-propanol

Karlsson, Hanna K. LU ; Drabo, Peter LU and Svensson, Helena LU (2019) In International Journal of Greenhouse Gas Control 88. p.460-468
Abstract

The aim of this study was to find a solvent to replace N-methyl-2-pyrrolidone (NMP) in CO2 absorption systems containing the amine 2-amino-2-methyl-1-propanol (AMP), in order to reduce the health risks associated with handling, as NMP is reproductively toxic. Seven organic solvents were investigated: dimethyl sulfoxide (DMSO), 3-(dimethylamino)propionitrile (3DMAPN), 1-pentanol (1 P), propylene carbonate (PC), 4-heptanone (4 H), 1-methylimidazole (1MIMI) and cyclohexanol (CH). Henry's constant, the CO2 solubility and the differential heat of absorption were determined for the pure solvents, and in solvent mixtures containing 25 wt% AMP, at 25 °C and 40 °C. Three of the solvents were found to have promising... (More)

The aim of this study was to find a solvent to replace N-methyl-2-pyrrolidone (NMP) in CO2 absorption systems containing the amine 2-amino-2-methyl-1-propanol (AMP), in order to reduce the health risks associated with handling, as NMP is reproductively toxic. Seven organic solvents were investigated: dimethyl sulfoxide (DMSO), 3-(dimethylamino)propionitrile (3DMAPN), 1-pentanol (1 P), propylene carbonate (PC), 4-heptanone (4 H), 1-methylimidazole (1MIMI) and cyclohexanol (CH). Henry's constant, the CO2 solubility and the differential heat of absorption were determined for the pure solvents, and in solvent mixtures containing 25 wt% AMP, at 25 °C and 40 °C. Three of the solvents were found to have promising absorption properties: DMSO, 3DMAPN and 1 P. In mixtures with AMP, precipitation was formed at both 25 and 40 °C, and the CO2 absorption capacity was similar to that in the AMP–NMP system, in terms of the CO2 loading for a given partial pressure of CO2. The results also indicated that the reaction of AMP and CO2 in these solvents can be described by the zwitterion reaction mechanism.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
AMP, Bi-phasic, CO capture, Heat of absorption, Non-aqueous, Precipitating, Solubility
in
International Journal of Greenhouse Gas Control
volume
88
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85068599186
ISSN
1750-5836
DOI
10.1016/j.ijggc.2019.07.001
language
English
LU publication?
yes
id
d6033bb1-bdf8-4a2c-a839-94b7d5b6ee8c
date added to LUP
2019-07-16 09:55:39
date last changed
2020-01-13 10:15:18
@article{d6033bb1-bdf8-4a2c-a839-94b7d5b6ee8c,
  abstract     = {<p>The aim of this study was to find a solvent to replace N-methyl-2-pyrrolidone (NMP) in CO<sub>2</sub> absorption systems containing the amine 2-amino-2-methyl-1-propanol (AMP), in order to reduce the health risks associated with handling, as NMP is reproductively toxic. Seven organic solvents were investigated: dimethyl sulfoxide (DMSO), 3-(dimethylamino)propionitrile (3DMAPN), 1-pentanol (1 P), propylene carbonate (PC), 4-heptanone (4 H), 1-methylimidazole (1MIMI) and cyclohexanol (CH). Henry's constant, the CO<sub>2</sub> solubility and the differential heat of absorption were determined for the pure solvents, and in solvent mixtures containing 25 wt% AMP, at 25 °C and 40 °C. Three of the solvents were found to have promising absorption properties: DMSO, 3DMAPN and 1 P. In mixtures with AMP, precipitation was formed at both 25 and 40 °C, and the CO<sub>2</sub> absorption capacity was similar to that in the AMP–NMP system, in terms of the CO<sub>2</sub> loading for a given partial pressure of CO<sub>2</sub>. The results also indicated that the reaction of AMP and CO<sub>2</sub> in these solvents can be described by the zwitterion reaction mechanism.</p>},
  author       = {Karlsson, Hanna K. and Drabo, Peter and Svensson, Helena},
  issn         = {1750-5836},
  language     = {eng},
  pages        = {460--468},
  publisher    = {Elsevier},
  series       = {International Journal of Greenhouse Gas Control},
  title        = {Precipitating non-aqueous amine systems for absorption of carbon dioxide using 2-amino-2-methyl-1-propanol},
  url          = {http://dx.doi.org/10.1016/j.ijggc.2019.07.001},
  doi          = {10.1016/j.ijggc.2019.07.001},
  volume       = {88},
  year         = {2019},
}