Physical adsorption characterization of nanoporous materials: progress and challenges

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 i...

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Bibliographic Details
Published in:Adsorption : journal of the International Adsorption Society 2014-02, Vol.20 (2-3), p.233-250
Main Authors: Thommes, Matthias, Cychosz, Katie A.
Format: Article
Language:English
Subjects:
Adsorption
Chemistry
Chemistry and Materials Science
Engineering Thermodynamics
Fluid dynamics
Fluid flow
Fluids
Heat and Mass Transfer
High resolution
Industrial Chemistry/Chemical Engineering
Nanostructure
Pore size
Porosity
Surfaces and Interfaces
Thin Films
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Summary: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.
ISSN:0929-5607
1572-8757
DOI:10.1007/s10450-014-9606-z