Symbol	Meaning	Units
$a$	specific surface/rate constant	m2 g−1/-
$b$	rate constant	-
$c$	rate constant	-
$d$	diameter	$m$
$\mathsf{\Delta }{h}_1^{ads}$	enthalpy of adsorption 1st layer	J mol−1
$\mathsf{\Delta }{h}_{2-9}^{ads}$	enthalpy of adsorption 2nd to 9th layer	J mol−1
$\mathsf{\Delta }{h}_{}^{LV}$	enthalpy of vaporization	J mol−1
$k$	equilibrium constant	-
$K$	equilibrium constant	-
$m$	amount of molecules per cluster	-
$M$	molar mass	g mol−1
$n$	number of moles	mol
$p$	pressure	Pa
$p_{}^{sat}$	saturation vapor pressure	Pa
$q$	quadrupole momentum	C Å2
$q_3$	volume density distribution	m−1
$Q_3$	volume sum distribution	-
$r$	radius	mm
$R$	universal gas constant	J mol−1 K−1
$T$	absolute temperature	K
$v$	molar volume	m3 mol−1
$v_p$	pore volume	m3 g−1
$X$	molar loading (adsorbed phase)	mol g−1
$\tilde{X}$	volume loading (adsorbed phase)	m3 g−1