Article ID Journal Published Year Pages File Type
204214 Fluid Phase Equilibria 2012 6 Pages PDF
Abstract

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.

► CO2 absorption in aqueous blend of MDEA and ionic liquids. ► Temperature range of 313.15–353.15 K and pressure range up to 3 MPa. ► Temperature and pressure effect conform to the general trend of absorption. ► Increasing ionic liquids has decreased CO2 loading capacity. ► Existence of 2 layers CO2-rich solvent.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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