Page 217 - Gas Adsorption Equilibria
P. 217

4. Volumetric – Gravimetric Measurements                         203


























          Figure 4.9.  Total mass of gas adsorbed on AC Norit R  1  at 298 K in two complementary two-
                   step  experiments.  First  the AC  is exposed  to  pure  and  after  20  hs  is
                   added. Data are presented by the lower curve  In  a  second experiment
                   the AC is first exposed to pure   and after 20 hs   is added. Respective data
                   are shown as upper curve in the Figure. Equilibrium pressures in both experiments
                   were p = 0.11 MPa, [4.4].





























          Figure 4.10. Adsorption isotherms of carbon dioxide  on  molecular  sieve NAX13
                   (Linde, UOP) in dry state (upper curve) and in states preloaded with water (lower
                   curves) at 323 K, [4.15].
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