Page 245 - Gas Adsorption Equilibria

4. Volumetric – Gravimetric Measurements 231

volume of a sorbate – sorbent system which
can not be penetrated by a sorptive gas

volume of a sorptive gas phase

void volume of a porous solid (sorbent)
measured by helium expansion experiments

volume of 1 mol of a gas (molar volume)

volume of a sinker at the magnetic
suspension balance

volume of storage vessel

volume of storage vessel i = 1, 2

volume of tubes, valves and dead volume of
a gas circulator in an adsorption installation,
cp. Fig. 4.1 and Eq. (4.6)

VGMs volumetric-gravimetric measurements (of
adsorption equilibria)

1 molar concentration of component (i = 1, 2)
in a sorptive gas mixture supplied to an
instrument prior to adsorption

1 compressibility of a gas (real gas factor)

1 compressibility factor of a sorptive gas
(mixture) prior to adsorption

change of microbalance signal within a
certain time interval

mass adsorbed per unit area on the internal
surface of a vessel including a sorptive gas

mass adsorbed per unit area on the surface
of a sample material