Table 1. Main CO2 Adsorption Data for the Four MOFs in This Study.
CO2 quantity adsorbed (p = 1 bar) [mmol g–1] |
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BET area [m2 g–1] | Qst [kJ mol–1] | CO2/N2 selectivity (Henry) | CO2/N2 selectivity (IAST) | T = 25 °C | T = 0 °C | |
MOF-801 | 948 | 24.6 | 23 | 25 | 2.42 (10.6 wt %) | 3.51 (15.4 wt %) |
PF-MOF1 | 649 | 29.4 | 30 | 34 | 1.58 (6.9 wt %) | 2.22 (9.8 wt %) |
PF-MOF2 | 626 | 29.8 | 95 | 41 | 2.10 (9.3 wt %) | 2.78 (12.2 wt %) |
Zr_TFS | 46 | 37.6 | ∞a | ∞a | 0.56 (2.5 wt %) | 1.24 (5.4 wt %) |
The N2 adsorption in ZrTFS at T = 25 °C is practically zero at low coverage.