Page 85 - Gas Adsorption Equilibria

1. Basic Concepts 71

g mass of Gibbsian sorptive gas phase
extending up to the surface of a sorbent
material, cp. Fig. 1 .20
g mass of sorbent material
PSSS plane surface sorption system, Fig. 1 .20

p Pa pressure
Pa saturation pressure of a sorptive gas at
temperature
r 1 nm = pore radius
g/mol molar mass of helium
T K, °C temperature

K, °C critical temperature of a sorptive gas
s cycle period of an industrial adsorption
process
total volume of an adsorption chamber
including a sorbent material and a
sorptive gas, Fig. 1 .20
volume of a sorbate phase as limited by
the atoms of a sorbent material and by
the molecules of a sorptive gas,
cp. Fig. 1.20
volume of a sorbate/sorbent system as
seen by the molecules of a sorptive gas
volume of sorptive gas phase outside of
the adsorbed phase

volume of Gibbsian sorptive gas phase
extending up to the surface of a sorbent
material, cp. Fig. 1 .20
void volume of a porous sorbent
material impenetrable to molecules of a
sorptive gas
volume of a sorbent material seen by
helium gas molecules
(helium volume of
m space coordinates