Journal
FLUID PHASE EQUILIBRIA
Volume 322, Issue -, Pages 120-125Publisher
ELSEVIER
DOI: 10.1016/j.fluid.2012.03.007
Keywords
Alkanolamine mixture; Ionic liquid; CO2 absorption
Funding
- [PPP 134/2009]
- [VC/HIR/001]
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In this paper, the solubility of CO2 in aqueous blends of N-methyldiethanolamine (MDEA) and guanidium tris(pentafluoroethyl)trifluorophosphate [gua](+)[FAP](-) ionic liquid was measured at 313.15, 333.15 and 353.15 K and at partial pressures up to 3 MPa. Reported data were loading capacity (mol CO2/total mol) as a function of CO2 partial pressure at equivalent temperature. A simple correlation was used to predict the solubility of CO2 in the mixtures. The predicted data showed good agreement with the experimental data. In this study, it has been found that adding [gua](+)[FAP](-) into the aqueous MDEA has lowered the absorption capacity and this effect was significant at higher concentrations. (C) 2012 Elsevier B.V. All rights reserved.
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