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Clarifications regarding the use of model-fitting methods of kinetic analysis for determining the activation energy from a single non-isothermal curve

Opened Access Clarifications regarding the use of model-fitting methods of kinetic analysis for determining the activation energy from a single non-isothermal curve

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Autor: Sánchez Jiménez, Pedro Enrique
Pérez Maqueda, Luis Allan
Perejón Pazo, Antonio
Criado Luque, José Manuel
Fecha: 2013
Publicado en: Chemistry Central Journal, 7 (1), 25-.
Tipo de documento: Artículo
Resumen: Abstract Background This paper provides some clarifications regarding the use of model-fitting methods of kinetic analysis for estimating the activation energy of a process, in response to some results recently published in Chemistry Central journal. Findings The model fitting methods of Arrhenius and Savata are used to determine the activation energy of a single simulated curve. It is shown that most kinetic models correctly fit the data, each providing a different value for the activation energy. Therefore it is not really possible to determine the correct activation energy from a single non-isothermal curve. On the other hand, when a set of curves are recorded under different heating schedules are used, the correct kinetic parameters can be clearly discerned. Conclusions Here, it is shown that the activation energy and the kinetic model cannot be unambiguously determined from a single experimental curve recorded under non isothermal conditions. Thus, the use of a set of curves reco...
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Cita: Sánchez Jiménez, P.E., Pérez Maqueda, L.A., Perejón Pazo, A. y Criado Luque, J.M. (2013). Clarifications regarding the use of model-fitting methods of kinetic analysis for determining the activation energy from a single non-isothermal curve. Chemistry Central Journal, 7 (1), 25-.
Tamaño: 581.5Kb
Formato: PDF

URI: https://hdl.handle.net/11441/70184

DOI: 10.1186/1752-153X-7-25

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