Isothermal Carbon Dioxide Sorption in Poly(ionic liquid)s

Isothermal Carbon Dioxide Sorption in Poly(ionic liquid)s

The low-pressure isothermal sorption of CO2 in poly(ionic liquid)s (PILs) with varied structures including different cations, anions, backbones, and substituents was investigated to probe structure effects on the CO2 sorption. An ammonium cation with short alkyl group, BF4 anion, and polystyrene bac...

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Veröffentlicht in:Industrial & engineering chemistry research 2009-10, Vol.48 (20), p.9113-9118
Hauptverfasser: Tang, Jianbin, Shen, Youqing, Radosz, Maciej, Sun, Weilin
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Chemical engineering
Exact sciences and technology
Materials and Interfaces
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Zusammenfassung:The low-pressure isothermal sorption of CO2 in poly(ionic liquid)s (PILs) with varied structures including different cations, anions, backbones, and substituents was investigated to probe structure effects on the CO2 sorption. An ammonium cation with short alkyl group, BF4 anion, and polystyrene backbone was found to favor CO2 sorption in PILs. CO2 sorption in the PILs fitted the dual-mode model very well, suggesting that the CO2 sorption consists of dissolution in the polymer matrix and Langmuir sorption in the microvoids.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie900292p