Separation of CO2 by Using Aqueous Mixtures of AMP and [B3MPYR][BF4] at High Pressure

In this study, co2 absorption capacity in aqueous mixtures of 2-amino-2-methyl-1-propanol, (amp) and n-butyl-3-methylpyridinium tetrafluoroborate, [b3mpyr][bf4] was measured at pressures from 200 kpa up to 5000 kpa and temperatures of 303.15 k - 333.15 k. the amp concentration was maintained at 1 m while the [b3mpyr][bf4] concentration ranges from 0.05 m to 0.3 m. it was observed that co2 loading capacity increases when the pressure increased. however, increasing of temperature will decrease the co2 loading. from the experimental results, a simple correlation, as suggested by jou and mather was used to predict the co2 loading in the aqueous amp-[b3mpyr][bf4] mixtures. the model were found to be in a good agreement with the experimental results where only 1.66% of the predicted values deviate more than 20% compared to the experimental values.