Page 50 - Gas Adsorption Equilibria
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36 Chapter 1
Figure 1.5. Determination of the (known) volume of a calibration cylinder by
gas expansion experiments using gases He (5.0), (5.0) and (5.5) at
298 K in a commercial gas pycnometer [1.48].
Figure 1.6. Determination of the volume of activated carbon Norit R1 Extra by helium
expansion measurements at 298 K in a commercial gas pycnometer
(Micromerites, Accu Pyc 1330).
b) The volume of a sample of (highly microporous) activated carbon (AC)
Norit R1 Extra has been determined in a commercial helium pycnometer
(Micromeritics, Accu Pyc 1330) at 293 K for various pressures up to
0.12 MPa. Equilibration times were 10 – 60 s. Results are sketched in
