Table 1. The measured properties of the PEI-MIL-101 adsorbents at 0.15 and 1 bar.
CO2 adsorbed (mmol g−1) | ||||||||
---|---|---|---|---|---|---|---|---|
25°C | 50°C | |||||||
PEI loading (wt%) | SBET (m2 g−1) | Vtotal (cm3 g−1) | Occupancy a (%) | 0.15 bar | 1 bar | 0.15 bar | 1 bar | |
MIL-101 | 0 | 3125.4 | 1.629 | 0 | 0.33 | 1.60 | 0.20 | 1.00 |
PEI-MIL-101-50 | 50 | 1802.7 | 0.901 | 31 | 2.40 | 4.00 | 1.86 | 3.07 |
PEI-MIL-101-75 | 75 | 1112.6 | 0.526 | 46 | 3.67 | 4.64 | 3.17 | 4.02 |
PEI-MIL-101-100 | 100 | 608.4 | 0.292 | 61 | 4.20 | 5.00 | 3.40 | 4.14 |
PEI-MIL-101-125 | 125 | 182.9 | 0.095 | 77 | 3.85 | 4.35 | 3.95 | 4.51 |
aThe total volume of MIL-101 divided by the volume of loaded PEI, the density of PEI was 1 ml/g.