Sources of misunderstandings when evaluating kineticparameters from thermogravimetric (TG) curves are discussed. A simple method for calculating Arrhenius parameters, suitable for implementation on a PC connected to the TG apparatus, is presented. The results obtained with calcium oxalate are discussed with respect to their ability to predict thermal behaviour in several experimental conditions: agreement with experimentaldata is satisfactory. This is not so when using some literature-cited kineticparameters, which fail to represent the same TG curves from which they are extracted. Suggestions are derived for design of a modern TG apparatus connected to a PC.
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Titolo: | Using thermoanalytical data. Part 1. The power of kinetic parameters determined from thermogravimetry to describe the experimental behaviour of the sample. |
Autori: | |
Data di pubblicazione: | 1990 |
Rivista: | |
Handle: | http://hdl.handle.net/11573/11850 |
Appartiene alla tipologia: | 01a Articolo in rivista |