| abstract |
An absorption medium, the water, an amine (A) of the formula (I) wherein R is an n-alkyl group having 1 to 4 carbon atoms and an alkanolamine (B) which is a tertiary amine or a sterically hindered primary or secondary amine has a high absorption capacity for CO 2 at a high absorption rate. With the absorption medium can be in the absorption of acidic gases from a gas mixture without the addition of a solvent, a separation of the absorption medium into two liquid phases or the precipitation of a solid in the absorption of CO 2 and the regeneration of the absorption medium avoided. |