CO₂ Capture in Ionic Liquids: A Review of Solubilities and Experimental Methods

Table 5

CO₂ solubility for ammonium ionic liquids.

Ionic liquid	Acronym	𝑇 (K)	𝑃 (bar)	χCO2	References
Bis(2-hydroxyethyl)-ammonium acetate	(BHEAA)	298.15	15.15	0.1076	Kurnia et al. 2009 [78]
		298.15	5.48	0.0391	Kurnia et al. 2009 [78]
2-Hydroxy-N-(2-hydroxyethyl)-N-methylethanaminium acetate	(HHEMEA)	298.15	15.42	0.0761	Kurnia et al. 2009 [78]
		298.15	6.15	0.0300	Kurnia et al. 2009 [78]
Bis(2-hydroxyethyl)-ammonium lactate	(BHEAL)	298.15	15.12	0.0835	Kurnia et al. 2009 [78]
		298.15	3.46	0.0192	Kurnia et al. 2009 [78]
2-Hydroxy-N-(2-hydroxyethyl)-N-methylethanaminium lactate	(HHEMEL)	298.15	15.23	0.0776	Kurnia et al. 2009 [78]
		298.15	3.48	0.0179	Kurnia et al. 2009 [78]
2-Hydroxy ethyl ammonium formate	(HEF)	303	78.9	0.3083	Yuan et al. 2007 [93]
		303	4.4	0.0340	Yuan et al. 2007 [93]
2-Hydroxy ethyl ammonium acetate	(HEA)	303	90.1	0.4009	Yuan et al. 2007 [93]
		303	8.9	0.0687	Yuan et al. 2007 [93]
2-Hydroxy ethyl ammonium lactate	(HEL)	303	82	0.2422	Yuan et al. 2007 [93]
		303	7.8	0.0410	Yuan et al. 2007 [93]
Tri-(2-hydroxyethyl)-ammonium acetate	(THEAA)	303	82.5	0.2561	Yuan et al. 2007 [93]
		303	10.3	0.0534	Yuan et al. 2007 [93]
Tri-(2-hydroxyethyl)-ammonium lactate	(THEAL)	303	70.9	0.4617	Yuan et al. 2007 [93]
		303	9.6	0.1006	Yuan et al. 2007 [93]
2-(2-Hydroxyethoxy)-ammonium formate	(HEAF)	303	72.8	0.1907	Yuan et al. 2007 [93]
		303	6.6	0.0300	Yuan et al. 2007 [93]
2-(2-Hydroxyethoxy)-ammonium acetate	(HEAA)	303	65.7	0.4860	Yuan et al. 2007 [93]
		303	7.6	0.0889	Yuan et al. 2007 [93]
2-(2-Hydroxyethoxy)-ammonium lactate	(HEAL)	303	73.2	0.2640	Yuan et al. 2007 [93]
2-(2-Hydroxyethoxy)-ammonium lactate	(HEAL)	303	12.4	0.0704	Yuan et al. 2007 [93]