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

Table 2

Structures of common IL cations and anions.

Cation	Structure	Anion	Structure
Imidazolium		Tetrafluoroborate
Pyrrolidinium		Hexafluoroborate
Pyridinium		Bis(trifluorophoshate)imide
Quaternary Ammonium		Nitrate
Tetra Alkyl Phosphonium		Acetate