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Colloid and Polymer Science

, Volume 256, Issue 7, pp 690–695 | Cite as

Adsorption of gas mixtures on heterogeneous solid surfaces

III. Extension of Tóth isotherm on multilayer adsorption of gas mixtures
  • M. Jaroniec
  • J. Tóth
Original Contributions Colloid Science

Summary

The analytical equations for multilayer adsorption isotherms of binary gas mixtures on heterogeneous solid surfaces are derived by using the well-known integral equation. These equations were obtained from the generalized Tóth and Freundlich isotherms (i. e., extended pure-gas Tóth and Freundlich isotherms to monolayer adsorption of binary gas mixtures), when the multilayer adsorption isotherm of Gonzalez and Holland was used to describe the local adsorption of binary gas mixtures. One of the derived multilayer adsorption isotherms has been applied to examine the experimental adsorption isotherms of hydrocarbons on charcoal (Nuxit-AL). The obtained numerical parameters have been compared with the parameters characterizing the monolayer adsorption, which were presented in the first part of this paper.

Keywords

Charcoal Adsorption Isotherm Experimental Adsorption Analytical Equation Numerical Parameter 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

Die analytische Isothermengleichungen, die für mehrschichtige und binäre Gasmischadsorption an heterogenen festen Oberflächen gültig sind, werden aufgrund der wohlbekannten Integralgleichung abgeleitet. Diese Gleichungen können an Hand der verallgemeinerten Form der Tóth und Freundlich Isothermen abgeleitet werden, wenn die Mehrschicht-Adsorptionsisothermen von Gonzalez und Holland für die Beschreibung der lokalen Adsorption der Gasmischung angewandt werden. Die so abgeleitete und für die Mehrschicht-Adsorption gültige Isothermengleichung wurde für die Untersuchung der an Aktivkohle (Nuxit-Al) gemessenen Adsorption benutzt. Die zahlenmäßigen Daten wurden mit den Parametern der Monolayer-Adsorption verglichen, die im ersten Teil dieser Arbeit erörtert wurde.

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Copyright information

© Dr. Dietrich Steinkopff Verlag 1978

Authors and Affiliations

  • M. Jaroniec
    • 1
  • J. Tóth
    • 2
  1. 1.Department of Theoretical ChemistryInstitute of Chemistry UMCSLublinPoland
  2. 2.Petroleum Engineering Research Laboratory of the Hungarian Academy of SciencesMiskolc-EgyetemvárosHungary

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