Amino acid based poly(ionic liquid) materials for CO2 capture: Effect of anion

Raja Shahrom, M.S. and Wilfred, C.D. and MacFarlane, D.R. and Vijayraghavan, R. and Chong, F.K. (2019) Amino acid based poly(ionic liquid) materials for CO2 capture: Effect of anion. Journal of Molecular Liquids, 276 . pp. 644-652.

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Poly(ionic liquid) materials based on eight amino acids (arginine Arg, lysine Lys, histidine Hist, taurine Tau, proline Pro, serine Ser, alanine Ala and glycine Gly) have been synthesized and characterized as CO2 absorbers. Among the broad family studied, Lys was found to have the highest gravimetric uptake with 15.7 wt%. In terms of molar adsorption, the highest CO2 sorption capacity was obtained with VBTMAArg with 0.83 mol/mol and this increased to 1.14 mol/mol after polymerization. The CO2 sorption increased as pressure increased and decreased as temperature was increased. Maximum desorption occurred at 80 °C and the materials can be readily recycled with 86% sorption capacity retention demonstrated on the 5th sorption cycle. The molecular-level behavior of the anions was discussed in terms of their activity coefficients and �-profiles from COSMO-RS calculations. © 2018

Item Type:Article
Impact Factor:cited By 0
Uncontrolled Keywords:Carbon dioxide; Ionic liquids; Negative ions; Sorption, Amino acid ionic liquids; CO2 capture; CO2 sorption; Molecular levels; Poly(ionic liquid)s; Polymerized ionic liquids; Sorption capacities; Sorption cycle, Amino acids
ID Code:22144
Deposited By: Ahmad Suhairi
Deposited On:28 Feb 2019 05:49
Last Modified:28 Feb 2019 05:49

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