Different types of polyethylenimine were studied to further improve the CO2 adsorption separation performance of the novel "molecular basket". The CO2 adsorption capacities were 153.5 and 117.2 mg/g-adsorbent for MCM PEI-L and MCM-PEI-B, respectively. The CO2 adsorption capacity for MCM-PEI-L was 31% higher than that for MCM-PEI-B. CO2 desorption rate for MCM-PEI-L was faster than that for MCM-PEI-B. At the beginning of the separation, CO2 was completely adsorbed by the "molecular basket" adsorbents and the CO2 concentration was below the detection limit of the GC. The CO2 breakthrough capacity for MCM-PEI-L was 64% higher than that for MCM-PEI-B. Both adsorbents hardly adsorbed any N2 and O2.
|Original language||English (US)|
|Journal||ACS Division of Fuel Chemistry, Preprints|
|State||Published - Mar 1 2004|
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