Extended Data Fig. 6: The stability of PCS-OH sorbents.
From: Capturing carbon dioxide from air with charged-sorbents
(a) Dry, pure CO2 uptake curves at 40 °C and 1 bar CO2 for PCS-OH before and after a period of sample storage in air for 14 months. The loss of capacity after 14 months suggests some degradation of the material. (b) Cycling capacities for 150 adsorption/desorption cycles for the PCS-OH in a simulated temperature-pressure swing adsorption process. Adsorption: 30 °C, 20 min, dry 30% CO2 in N2; Desorption: 100 °C, 20 min, dry 30% CO2 in N2. (c) CO2 uptake curves at 40 °C and under 50% CO2 in N2 for PCS-OH after activation with various activation temperatures (130 °C, 110 °C, 90 °C, 70 °C, 50 °C and 30 °C).
