Insight into master plots method for kinetic analysis of lignocellulosic biomass pyrolysis
The determination of the kinetic triplet including the activation energy, frequency factor, and kinetic mechanism function is a key objective in kinetic analysis of solid-state reactions like lignocellulosic biomass pyrolysis. The master plots method is usually used to determine the kinetic mechanis...
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Published in | Energy (Oxford) Vol. 233; p. 121194 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
Oxford
Elsevier Ltd
15.10.2021
Elsevier BV |
Subjects | |
Online Access | Get full text |
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Summary: | The determination of the kinetic triplet including the activation energy, frequency factor, and kinetic mechanism function is a key objective in kinetic analysis of solid-state reactions like lignocellulosic biomass pyrolysis. The master plots method is usually used to determine the kinetic mechanism function once the activation energies as a function of conversion are estimated from an isoconversional method. A critical study of the master plots method has been performed by analyzing theoretically simulated processes with varying activation energies and frequency factors. The accuracy of the resulting kinetic mechanism function calculated by the master plots method is strongly dependent on the variation degree of the frequency factor with conversion and the conversion dependency of activation energy from isoconversional methods. The utilization of the master plots method without considering the variation degree of the frequency factor with conversion may result in misestimating kinetic mechanism function.
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•Applicability and accuracy of master plots method are investigated.•Accuracy of master plots method depends on variation degree of Aα with α and α-dependency of Eα.•Master plots method needs modification when Aα significantly varies with α. |
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ISSN: | 0360-5442 1873-6785 |
DOI: | 10.1016/j.energy.2021.121194 |