Open AccessA consideration of the correct calculation of thermodynamic parameters of adsorption
Author(s) -
Slobodan K. Milonjić
Publication year - 2007
Publication title -
journal of the serbian chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.227
H-Index - 45
eISSN - 1820-7421
pISSN - 0352-5139
DOI - 10.2298/jsc0712363m
Subject(s) - freundlich equation , langmuir , adsorption , dimensionless quantity , thermodynamics , chemistry , constant (computer programming) , materials science , physics , computer science , programming language
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 ?G expressed instead of dimensionless in some concentration units (for example: l mol-1, l g-1, ml mg-1, etc.).