Sadeghpour, Mahsa and Yusoff, Rozita and Aroua, Mohamed Kheireddine and Tabandeh, Mojtaba (2018) Modification of polyethylene glycol with choline chloride and evaluation of the CO2 absorption capacity of their aqueous solutions. Greenhouse Gases: Science and Technology, 8 (2). pp. 324-334. ISSN 2152-3878
Full text not available from this repository.Abstract
In this study, two new water-soluble poly ionic liquids (PILs) polyethylene glycol- Di choline chloride (PEG-(ChCl)2) were modified, with two molecular weights of PEG, 400 and 600, to be used as solvents for CO2 capture. The modified polymers were characterized using Fourier transform infra-red (FT-IR) spectroscopy and proton nuclear magnetic resonance (1H-NMR). CO2 absorption using the PILs was conducted at temperatures from 30 to 70°C and at pressures ranging from 10 to 13 bars. Both PILs saturated and then regenerated under the regeneration temperature: 90–100°C. The results showed that most of CO2 in the liquid phase is released through the thermal regeneration before solutions start to boil after three cycles. PEG (400)–(ChCl)2, and PEG(600)–(ChCl)2 with a concentration of 0.03M showed CO2 loading of 16.24 and 15.68, respectively. These results were 25% higher than the original PEG (400–600).