Preparation of supported amino-ionic liquid and its CO2 adsorption capacity

Two kinds of ionic liquids ([NH3P-mim] [BF4] and [MEA]L) were supported to AC, Al2O3 and MCM-41 by soaking method. [NH3P-mim] [BF4]/AC was confirmed to have the better CO2 adsorption capacity. Using [NH3P-mim] [BF4]/AC, CO2 adsorption capacity was tested under the condition of different amount of supported ionic liquids and different temperature. The results show that CO2 adsorption capacity increases with the amount of supported ionic liquids increasing, and 30°C was the optimum temperature, with an CO2 adsorption capacity of 0.063 mmol CO2·(g SILP)-1. The structure of the [NH3P-mim] [BF4]/AC was confirmed by FT-IR and thermogravimetry characterization, the latter shows that it has excellent thermostability wthin below 50°C. © All Rights Reserved.