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. Author manuscript; available in PMC: 2021 Jul 5.
Published in final edited form as: J Am Chem Soc. 2019 Aug 8;141(33):13171–13186. doi: 10.1021/jacs.9b05567

Figure 4.

Figure 4.

Breakthrough experiments with 2-ampd–Mg2(dobpdc) under 28 sccm of a simulated NGCC flue emission stream of 4% CO2 in N2 at 40 °C and ~1.1 bar. (a) Experiment with dry simulated flue gas. Capture rate: 86%; exhaustion capacity: 2.4 ± 0.2 mmol/g. (b) Second (filled symbols) and third (open symbols) breakthrough experiment cycles with humid flue gas following pre-saturation of the adsorbent bed with water. Capture rate: >99%; usable capacity (average ≥90% capture): 2.2 and 2.3 ± 0.1 mmol/g; exhaustion capacity: 2.4 and 2.5 ± 0.1 mmol/g for 2nd and 3rd cycles, respectively. (c) Overlay of dry and humid (3rd cycle) CO2 breakthrough profiles. The y-axis is shown as normalized outlet flow rate (F/F0) in (a) and (b) and as outlet composition in mol % in (c).