Fig. 2: Adsorption and desorption properties of TAMOF-1.
From: Selective adsorption of CO2 in TAMOF-1 for the separation of CO2/CH4 gas mixtures
a Adsorption/desorption isotherms of CO2, CH4 and N2 in a TAMOF-1 powder sample at 298 K up to 10 bar. b Adsorption isotherms of CO2 with a temperature range of 293–353 K up to 10 bar. c IAST selectivity of different CO2/CH4 gas mixtures with varying ratios at 25 °C up to 1 bar. d CO2 sorption capacity versus CO2/CH4 IAST selectivity for binary 50:50 v/v mixtures at 1 bar and 293 K (IAST selectivity values > 20), adapted from ref. 42. e Breakthrough curves of CO2 (solid line) and CH4 (dashed line) for binary mixtures with different CO2/CH4 ratios: 25:75(blue), 50:50(red), 75:25(green). f CO2 breakthrough curves in different inlet gas mixtures: 50:50 CO2/CH4 (red), 50:50 CO2/N2 (cyan), CO2/CH4/N2 = 50/25/25 (magenta). Measures in (e and f) were performed with 0.7 g of activated TAMOF-1 powder. TAMOF-1 was activated under vacuum (10−1 mbar) in both column top and bottom sides at 393 K for 15 h. g CO2/CH4 (50:50) breakthrough curves for activated TAMOF-1 (7.7 g) at 72% relative humidity (RH). TAMOF-1 was activated under vacuum (10-1 mbar) in both column top and bottom sides at 393 K for 15 h. h CO₂/CH₄ (50:50) breakthrough curves for activated TAMOF-1 (0.7 g) under acid gas conditions (0.9% H₂S, 2.5% H₂O). TAMOF-1 was activated under N2 flow (170 mil min–1 gTAMOF –1) at 393 K for 15 h. All breakthrough experiments were performed at 298 K and 1.05 bar. See Supplementary Tables 19–21 for detailed fixed-bed adsorption parameters.
