Abstract
A thermodynamic framework for calculating the specific heat capacity
(
C
p
)
of a single component
adsorbent
+
adsorbate
system has been derived and developed using the classical thermodynamics, and these are essential for the design of adsorption processes. The derived formulation of the
C
p
is compared with the experimentally measured
C
p
of
adsorbent
+
adsorbate
systems. The purpose of this letter is to fill up the information gap with respect to the state of adsorbed phase to dispel the confusion as to what is the actual state of the adsorbed phase.