Weize Wu, Buxing Han*, Haixiang Gao, Zhimin Liu, Tao Jiang, Jun Huang

The ionic liquid, 1,1,3,3- tetramethylguanidine lactate, can absorb SO₂ from a simulated flue gas effectively with high absorption capacity. The absorbed SO₂ can be reversibly desorbed by vacuum or heating, and the IL can be reused. This method has potential applications such as removal of SO₂ pollutants, and the separation of gas mixtures that contain SO₂.

Angew. Chem. Int. Ed. Engl. 2004, 43, 2415-2417;