Support Pore Structure and Composition Strongly Influence the Direct Air Capture of CO₂ on Supported Amines.

Thus, in realistic sub-ambient DAC operation, the H 2 O adsorption working capacity could be very low, depending on the adsorption time and the effect of adsorbed H 2 O on the 400 ppm CO 2 adsorption may not be significant due to the kinetically limited H 2 O uptake at sub-ambient temperature conditions (e.g., −20 °C).

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