Misuse of Arrhenius Pre-exponential Factor in Kinetic and Thermodynamic Studies

What is it about?

* The paper discusses the misuse of the Arrhenius pre-exponential factor in kinetic and thermodynamic studies using thermogravimetry. * The author emphasizes the limitations and restrictions of the second derivative method for calculating the pre-exponential factor. * The author highlights that using the restricted equation can generate misleading kinetic and thermodynamic data. * The paper warns against replacing peak-maximum temperature (Tm) with conversion temperature (Ti) or keeping Tm constant with varying activation energy (Ea) when calculating the pre-exponential factor. * It is important to understand the limitations of the equation to avoid generating false thermodynamic data and interpretations. Overall, the paper aims to inform readers about the potential pitfalls of using the pre-exponential factor obtained from the restricted equation and emphasizes the need for careful consideration of the limitations in kinetic and thermodynamic studies.

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Photo by Santa Barbara on Unsplash

Photo by Santa Barbara on Unsplash

Why is it important?

* The paper highlights the misuse of the Arrhenius pre-exponential factor in kinetic and thermodynamic studies using thermogravimetry, emphasizing the limitations and restrictions of the second derivative method. * It informs readers about the potential pitfalls of using the pre-exponential factor obtained from the restricted equation, which can lead to misleading kinetic and thermodynamic data. * The author emphasizes the need for understanding the limitations of the equation to avoid generating false thermodynamic data and interpretations. * The work addresses the recent use of the standard test method (ASTM E698) by many researchers to calculate the pre-exponential factor, highlighting the overlooked restrictions of this method. * By raising awareness about the limitations and potential misinterpretations, the paper aims to improve the accuracy and reliability of kinetic and thermodynamic studies in the field. Overall, the unique aspect of this work lies in its focus on the misuse of the pre-exponential factor and the potential consequences it can have on the interpretation of kinetic and thermodynamic data. By highlighting these issues, the paper aims to improve the quality of research in the field and ensure more accurate and reliable results.