Abstract
Four ionic liquids were investigated for abilities to capture CO2 alone or with added catalyst at room temperature and atmospheric pressure. Hydrated aluminum nitrate Al (NO3)3.9H2O-urea with added CaO, hydrated ammonium aluminum sulfate NH4Al (SO4)2.12H2O-urea with added solid NaOH did not show in FTIR chart sign of either physical or chemical absorption of CO2, however hydrated ammonium aluminum sulfate NH4Al (SO4)2.12H2O-urea with added NaOHaq or few water showed a chemical absorption of CO2 at 1666 cm-1 as in aluminum chloride-urea ionic liquid while aluminum chloride-acetamide showed weaker or no ability to capture CO2.
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