The determination and use of the second derivative thermogravimetric function (DDTG) and the calculation of the kinetic constants of some decomposition reaction types

T. Székely, G. Várhegyi, F. Till

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As previously pointed out by the authors, the determination and use of the second derivative thermogravimetric curve (DDTG) permits the accurate calculation of kinetic parameters of simple reactions, using the methods of numerical analysis. Furthermore, the method outlined makes possible the kinetic analysis of some composite reactions which frequently occur in thermoanalytical practice. The cases of independent and competitive reactions are discussed. In the latter the proposed method of evaluation is suitable for the on-line work of a combined thermobalance-mass spectrometer system.

Original languageEnglish
Pages (from-to)227-237
Number of pages11
JournalJournal of thermal analysis
Issue number2-3
Publication statusPublished - Jul 1 1973


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)

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