A consideration of the correct calculation of thermodynamic parameters of adsorption

Autor: SLOBODAN K. MILONJIC
Jazyk: angličtina
Rok vydání: 2007
Předmět:
Zdroj: Journal of the Serbian Chemical Society, Vol 72, Iss 12, Pp 1363-1367 (2007)
Druh dokumentu: article
ISSN: 0352-5139
Popis: The Langmuir and Freundlich isotherm equations have been widely used for interpreting various adsorption processes. There are, however, many serious mistakes in the literature in determination or calculation of thermodynamic parameters, especially in the determination of the change in the free energy of adsorption using Langmuir, Freundlich and Henry constants. Many authors used these constants for the determination of ΔG expressed instead of dimensionless in some concentration units (for example: l mol-1, l g-1, ml mg-1, etc.).
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