Some mistakes and misinterpretations in the analysis of thermodynamic adsorption data

In this work, we discuss some results and statements recently published in the scientific adsorption literature. In particular, we focus on the thermodynamic aspects of the adsorption process, including dimensional inconsistency of fitted parameters, Temkin isotherm assumptions, inaccurate calculation of Delta H degrees and Delta S degrees, parameter determination without providing the errors of estimate, mismatch between selected isotherm models and isosteric heat of adsorption, misleading interpretation of the spontaneity of a process, and interchangeability of Delta G and Delta G degrees. A graphical method is proposed for assessing data reliability and applicability of the van't Hoff equation. (C) 2022 Elsevier B.V. All rights reserved.

Automated summary

This work discusses recent results and statements in the field of scientific adsorption, focusing on the thermodynamic aspects of the process. It addresses issues such as dimensional inconsistency of fitted parameters, assumptions in isotherm models, inaccuracies in calculating Delta H degrees and Delta S degrees, and the interchangeability of Delta G and Delta G degrees. The paper also proposes a graphical method for assessing data reliability and the applicability of the van't Hoff equation.