Generalized master plots as a straightforward approach for determining the kinetic model: The case of cellulose pyrolysis

The thermal degradation of cellulose is a complex reaction and, despite the large amount of work by many investigators during the last decades, the actual understanding of the thermal decomposition kinetics is still very limited. Thus, while several mechanisms have been proposed to describe the proc...

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Detalles Bibliográficos
Autores: Sánchez Jiménez, Pedro Enrique, Pérez Maqueda, Luis Allan, Perejón Pazo, Antonio, Criado Luque, José Manuel
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2013
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/70596
Acceso en línea:https://hdl.handle.net/11441/70596
https://doi.org/10.1016/j.tca.2012.11.003
Access Level:acceso abierto
Palabra clave:Kinetics
Cellulose
Thermal degradation
Random scission
Master plots
Pyrolisis
Descripción
Sumario:The thermal degradation of cellulose is a complex reaction and, despite the large amount of work by many investigators during the last decades, the actual understanding of the thermal decomposition kinetics is still very limited. Thus, while several mechanisms have been proposed to describe the process, the real model has not yet been clearly identified. In this paper, a set of experimental curves recorded under different heating schedules, i.e., linear heating rate, isothermal and constant rate thermal analysis (CRTA), has been analyzed using isoconversional and master plots methodology to discriminate the kinetic model followed by the reaction.