Comments on the Methods of Characterization of Textural Properties of Solids from Gas Adsorption Data

• Main Authors: Antonio Marcilla, Amparo Gomez-Siurana, Ma Muñoz José, Francisco Javier Valdés
• Format: Article
• Language: English
• Published: Hindawi - SAGE Publishing 2009-02-01
• Series: Adsorption Science & Technology
• Online Access: https://doi.org/10.1260/026361709788921579

Certain drawbacks of several of the conventional methods of analyzing Type I and II adsorption isotherms frequently used to characterize the structural properties of adsorbent materials have been demonstrated. A simple and flexible procedure, based on an equation combining the Dubinin equation to account for the micropore contribution and the BET equation to account for the non-porous contribution, has been proposed which is capable of simultaneously correlating the adsorption isotherm up to relative pressures of 0.4. Examples are presented showing that the suggested procedure provides a proper interpretation of the data coherent with the origin of the samples and avoids the misinterpretation that could arise from the application of the conventional methods.