Absorption of carbon dioxide in ionic liquid solutions of alkanoloamines

Baj S; Chrobok A; Siewniak A; Krawczyk T; Tatarczuk A

Przemysl Chemiczny, Vol.90, No.12, 2202-2206, 2011

Baj S, Chrobok A, Siewniak A, Krawczyk T, Tatarczuk A

Sixteen ionic liquids (IL) were used as solvents of NH2(CH2)(2)OH and NH[(CH2)(2)OH](2) (concn. 12,5% by mass) for sorption of CO2 from gas phase at 25-65 degrees C and 300-1000 rpm. The anions of IL played a crucial role for the sorption efficiency. The efficiency decreased in the anion series: AcO- >> CF3COO- > alkylsulfate > bis(trifluoromethylsulfonyl)imide, PF6-, BF4-.