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Adsorption

, Volume 20, Issue 2–3, pp 233–250 | Cite as

Physical adsorption characterization of nanoporous materials: progress and challenges

  • Matthias ThommesEmail author
  • Katie A. Cychosz
Article

Abstract

Within the last two decades major progress has been achieved in understanding the adsorption and phase behavior of fluids in ordered nanoporous materials and in the development of advanced approaches based on statistical mechanics such as molecular simulation and density functional theory (DFT) of inhomogeneous fluids. This progress, coupled with the availability of high resolution experimental procedures for the adsorption of various subcritical fluids, has led to advances in the structural characterization by physical adsorption. It was demonstrated that the application of DFT based methods on high resolution experimental adsorption isotherms provides a much more accurate and comprehensive pore size analysis compared to classical, macroscopic methods. This article discusses important aspects of major underlying mechanisms associated with adsorption, pore condensation and hysteresis behavior in nanoporous solids. We discuss selected examples of state-of-the-art pore size characterization and also reflect briefly on the existing challenges in physical adsorption characterization.

Keywords

Physical adsorption Argon 87 K adsorption Pore condensation Hysteresis DFT pore size distribution Hierarchically structured materials 

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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Quantachrome InstrumentsBoynton BeachUSA

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