Page 14 - Adsorption by Powders and Porous Solids

List of Main Symbols

As far as possible, the notation used here follows the recommendations of the
International Union of Pure and Applied Chemistry.

specific surface area
surface area
A(ext) or a(ext) external surface area
Langmuir adsorption coefficient
molality of a solute B
second virial (molar) coefficient
concentration
BET constant
molecular diameter or particle diameter
energy
E, adsorption molar energy at infinitely low coverage
E, adsorption molar energy for the first layer
E' liquefaction energy
Helmoltz energy defined as U - TS
Gibbs energy defined as H - TS
enthalpy defined as U + pV
distance between the nuclei in the parallel walls of a pore
intercept
Henry's law constant
equilibrium constant
Kelvin, SI unit
Avogadro constant
mass
molar mass
amount of substance
specific surface excess amount
no surface excess amount (in the Gibbs representation)
na adsorbed amount (in the layer representation)
n, monolayer capacity
n(,,,, Specific surface excess amount corresponding to the saturation of pores
n, pore capacity