Page 151 - Gas Adsorption Equilibria
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3. Gravimetry 137
Figure 3.7A. Adsorption isotherm (AI) of pure nitrogen 5.0) on activated carbon (AC)
NORIT R1 EXTRA at 77 K, atm.
Due to the extreme steepness of the AI in Fig. 3.7A it was not possible to
calculate the micropore spectrum from the data by the (standardized)
Horwath-Kawazoe-Method, cp. [3.29].
In view of this we took similar measurements with Ar at 87 K. The
resulting AI is sketched in Figure 3.7B.
Figure 3.7B. Adsorption isotherm of pure argon (Ar, 5.0) on activated carbon (AC) NORIT R1
EXTRA at 77 K, atm.
