Abstract
The Percus-Yevick equation of state is applied to a two-dimensional adsorbed fluid. Calculation of the adsorption isotherm is divided into two parts: the Henry's constant for gas-solid interactions, and the configurational contribution of the two-dimensional film. The theory is compared with experimental data for adsorption of argon and krypton on graphitized carbon black and agreement is excellent. This is the first successful calculation of adsorption isotherms over a wide range of temperature and surface density for which no adjustable parameters are used for the two-dimensional equation of state.
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