Article
Determination of the Activation Energy Under Isothermal Conditions: Revisited
Author/s | Arcenegui Troya, Juan
Sánchez Jiménez, Pedro Enrique Perejón Pazo, Antonio Pérez Maqueda, Luis Allan |
Department | Universidad de Sevilla. Departamento de Química Inorgánica |
Publication Date | 2023 |
Deposit Date | 2023-04-14 |
Published in |
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Abstract | The kinetic analysis of solid-state processes aims at obtaining fundamental information that can be used for predicting the time evolution of a process within a wide range of conditions. It is an extended belief that the ... The kinetic analysis of solid-state processes aims at obtaining fundamental information that can be used for predicting the time evolution of a process within a wide range of conditions. It is an extended belief that the determination of the kinetic parameters from the analysis of curves recorded under isothermal conditions is strongly conditioned by the kinetic model used to fit the experimental data. Thus, much effort is devoted to finding the model that truly describes a process in order to calculate the kinetic parameters with accuracy. In this work, we demonstrate that the value of activation energy determined from kinetic analysis of isothermal curves is independent of the kinetic model used to fit the experimental data and, taking advantage of the underlying reason for this, a method for determining the activation energy with two isothermal curves is proposed. |
Funding agencies | European Union (UE) Ministerio de Ciencia e Innovación (MICIN). España Junta de Andalucía Consejo Superior de Investigaciones Científicas (CSIC) |
Project ID. | CTQ2017-83602-C2-1-R
PDC2021-121552-C21 P18-FR-1087 US-1262507 DOC_ 00044 201960E092 202060I004 |
Citation | Arcenegui Troya, J., Sánchez Jiménez, P.E., Perejón Pazo, A. y Pérez Maqueda, L.A. (2023). Determination of the Activation Energy Under Isothermal Conditions: Revisited. Journal of Thermal Analysis and Calorimetry, 148 (4), 1679-1686. https://doi.org/10.1007/s10973-022-11728-3. |
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