Effective adsorption energy distribution function as a new mean-field characteristic of surface heterogeneity in adsorption systems with lateral interactions

2007 ◽  
Vol 311 (2) ◽  
pp. 622-627 ◽  
Author(s):  
Piotr Zarzycki
Keyword(s):  
Distribution Function ◽  
Energy Distribution ◽  
Adsorption Energy ◽  
Mean Field ◽  
Surface Heterogeneity ◽  
Energy Distribution Function ◽  
Lateral Interactions ◽  
Field Characteristic ◽  
Adsorption Energy Distribution ◽  
Adsorption Systems

scholarly journals The Procedure for Evaluating the Adsorption Energy Distribution from an Analysis of Thermodesorption Spectra Based on the Statistical Rate Theory

2002 ◽  
Vol 20 (4) ◽  
pp. 381-391 ◽  
Author(s):  
Tomasz Panczyk ◽  
Wladyslaw Rudzinski ◽  
Tadeusz Borowiecki ◽  
Anna Dominko
Keyword(s):  
Distribution Function ◽  
Numerical Analysis ◽  
Energy Distribution ◽  
Adsorption Energy ◽  
Molecular Sieve ◽  
Energy Distribution Function ◽  
Rate Theory ◽  
Carbon Fibres ◽  
Statistical Rate Theory ◽  
Adsorption Energy Distribution

We have recently proposed a new method for evaluating the adsorption energy distribution function χ(ε) from the numerical analysis of thermodesorption spectra. This method is based on an application of the Statistical Rate Theory developed by Ward et al. (1982). In this paper, we present some simplifications of this method thereby allowing its ready application. Illustrative calculations for the nitrogen thermodesorption spectra from the surface of molecular sieve carbon fibres (MSCF) are presented.

scholarly journals Application of the Dubinin–Astakhov Equation to the Study of the Geometric Structure, Energetic Surface Heterogeneity and Surface Topography of Carbonaceous Adsorbents

1993 ◽  
Vol 10 (1-4) ◽  
pp. 35-61 ◽  
Author(s):  
W. Rudziński ◽  
K. Nieszporek ◽  
A. Dabrowski
Keyword(s):  
Surface Topography ◽  
Adsorption Energy ◽  
Site Occupancy ◽  
Surface Heterogeneity ◽  
Isotherm Equation ◽  
Adsorption Energy Distribution ◽  
Adsorption On Heterogeneous Surfaces ◽  
The Common ◽  
Non Gaussian ◽  
Adsorption Systems

The new theoretical approach to multisite-occupancy adsorption on heterogeneous surfaces, developed recently by Rudziński and Everett, is generalized for the case of adsorption systems characterized by non-Gaussian adsorption energy distributions. Attention is focused on the adsorption energy distribution which, in the case of one-site-occupancy adsorption, leads to the Dubinin–Astakhov isotherm equation. In effect, a generalized form of that isotherm equation is developed for the common case of multisite-occupancy adorption in actual adsorption systems. The generalized equation is sensitive to surface topography; hence, fitting it to experimental adsorption isotherms creates a chance to study the surface topography of carbonaceous surfaces. An example of such computer exercises is reported here before a more systematic study is published.

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