Table 1. Tabulated Pure-Gas Permeation Results for the Neat Polyimide and MMMs with Various PSM–MOF Loadingsa.
permeability (Barrer) |
selectivity |
|||||||
---|---|---|---|---|---|---|---|---|
loading (wt %) | CH4 | N2 | O2 | H2 | CO2 | CO2/CH4 | CO2/N2 | H2/CH4 |
0% | 83 ± 3 | 86 ± 3 | 218 ± 7 | 820 ± 20 | 1280 ± 40 | 15.4 ± 0.4 | 14.8 ± 0.4 | 9.8 ± 0.3 |
2.5% | 84 ± 3 | 86 ± 3 | 222 ± 7 | 840 ± 30 | 1310 ± 40 | 15.7 ± 0.4 | 15.5 ± 0.4 | 10.0 ± 0.3 |
5% | 84 ± 3 | 86 ± 3 | 227 ± 7 | 860 ± 30 | 1340 ± 40 | 15.9 ± 0.4 | 15.5 ± 0.4 | 10.2 ± 0.3 |
7.5% | 85 ± 3 | 87 ± 3 | 231 ± 7 | 880 ± 30 | 1370 ± 40 | 16.0 ± 0.4 | 15.7 ± 0.4 | 10.3 ± 0.3 |
10% | 86 ± 3 | 87 ± 3 | 240 ± 7 | 890 ± 30 | 1400 ± 40 | 16.2 ± 0.4 | 16.0 ± 0.4 | 10.4 ± 0.3 |
15% | 90 ± 3 | 92 ± 3 | 249 ± 7 | 940 ± 30 | 1470 ± 40 | 16.4 ± 0.4 | 16.0 ± 0.4 | 10.4 ± 0.3 |
20% | 94 ± 3 | 97 ± 3 | 259 ± 8 | 980 ± 30 | 1540 ± 40 | 16.5 ± 0.5 | 15.9 ± 0.4 | 10.5 ± 0.3 |
25% | 98 ± 3 | 103 ± 3 | 270 ± 9 | 1040 ± 30 | 1640 ± 50 | 16.7 ± 0.5 | 15.9 ± 0.4 | 10.6 ± 0.3 |
30% | 100 ± 3 | 106 ± 3 | 281 ± 9 | 1070 ± 30 | 1710 ± 50 | 17.1 ± 0.5 | 16.1 ± 0.4 | 10.7 ± 0.3 |
35% | 104 ± 3 | 108 ± 3 | 300 ± 10 | 1150 ± 40 | 1810 ± 60 | 17.5 ± 0.5 | 16.8 ± 0.5 | 11.1 ± 0.3 |
40% | 107 ± 3 | 109 ± 3 | 310 ± 10 | 1180 ± 40 | 1890 ± 60 | 17.7 ± 0.5 | 17.4 ± 0.5 | 11.1 ± 0.3 |
Selectivities are included for CO2/CH4, CO2/N2, and H2/CH4 separations.