Experimental Investigation on the Solubility and Initial Rate of Absorption of CO2 in Mixture of Amine-Functionalized Ionic Liquids and Physical Solvents

Abstract

In this paper, the experimental investigation ofsolubility and initial absorption rate of CO2 gas in methanol and 1-ethyl-3-methylimidazolium ethylsulfate, [emim][EtSO4] solution of amine-functionalized imidazolium based ionic liquids, namely 1-(3- aminopropyl)-3-methylimidazolium, [apmim], with tetrafluoroborate, [BF4], hexafluorophosphate, [PF6] and trifluoromethanesulfonate [OTf] anions are presented. All ionic liquids in this work are synthesized according to literature procedure and all experimental trials were carried out at T=303.15 K and pressure from atmospheric to 40 bar.

Keywords

• task specific ionic liquids
• solubility
• initial rate ofabsorption
• physical solvent