Theoretical Interpretation and Classification of Adsorption Isotherms for Simple Fluids Academic Article uri icon


  • We apply nonlocal density functional theory to the interpretation and classification of adsorption isotherms in terms of the underlying molecular properties and pore geometry. We present results for single walls and slits (parallel walls) varying pore width, temperature, and the parameter ratios ɛ2f/ɛff (well depth) and σ2f/σff (molecular diameters) for the solid-fluid and fluid-fluid potentials. In a second study we present an improved method for the determination of pore size distribution. The theoretical adsorption isotherms for single pores are correlated as a function of the pressure and pore width. The pore-size distribution is then found by comparing this correlation to the experimental adsorption data for nitrogen in porous carbons. © 1993, Kodansha Ltd.

author list (cited authors)

  • Balbuena, P. B., Lastoskie, C., Gubbins, K. E., & Quirke, N.

citation count

  • 2

publication date

  • January 1993