Figure 5:

Dynamic column breakthrough curves for CO₂ on a 13X zeolite exposed to 400 μL · L⁻¹ CO₂ in He at 500 cm³ · min⁻¹ (IUPAC STP); shown are the MS (m/z) 44 signals obtained for the sorbent column (blue solid curve) and the bypass (black dashed curve); temperature and mean total pressure are as indicated. The measured capacity under these conditions is 0.23 mol · kg⁻¹; static adsorption isotherm measurements (see text) yield 0.22 mol · kg⁻¹.