Various Gas Adsorption Equations

Other isotherm equations begin as an alternative approach to the developed equation of state for a two-dimensional ideal gas. As mentioned earlier, the ideal equation of state is found to be [Pg.118]

In combination with the Langmuir equation, one can derive the following relation between Ns and p [Pg.118]

FIGURE 5.8 Adsorption (Ns/Nsm = relative adsorption) versus pressure (p/po = relative pressure) of a gas on solid. [Pg.119]

The adsorption-desorption process is of interest in many systems (such as with cement). The water vapor may condense in the pores after adsorption under certain conditions. This may be studied by analyzing the adsorption-desorption data [Pg.119]

The BET equation has originally been derived for multilayer adsorption only. [Pg.97]

The enthalpy involved in multilayers is related to the differences and was defined by BET theory as [Pg.98]

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