PEG-Functionalized Liquid Absorbents

ILs are salts being composed of distinct cations and anions that are capable offacilely tuning, and whereby can be designed for task-specific applications through smart choice of the respective cation and/or anion. Nowadays, ILs have been extensively 

Absorption of C02 at ambient pressure using basic ILs have attracted much attention in recent years, such as IL consisting of an imidazolium cation with a primary amine moiety and tetrafluoroborate anion [3], tetrabutylphosphonium amino acids [73]. Chitin and chitosan can be dissolved in [BMIm]Cl [74] and so on. 

Hydrocarbon surfactant liquids are promising candidates for C02 capture with the following advantages (1) The hydrocarbon surfactants are cheap and nontoxic (2) The solubility of C02 in surfactants can be readily tuned by tailoring the amphiphilic structure of polar head and nonpolar tail (3) As the hydrocarbon surfactants are nonvolatile, C02 can be desorbed without loss of the surfactants 

TX-100/CO2 at different pressures at 25 °C, the inset presents the dependence of wavenumber (WN) of OH-stretching on pressure. Reprinted with permission from Ref. [83]. Copyright 2011 Royal Society of Chemistry 

D Alessandro DM, Smit B, Long JR (2010) Carbon dioxide capture prospects for new materials. Angew Chem Int Ed 49(35) 6058-6082 

---