On the kinetic analysis of DTA curves

Yoram Kirsh

Research output: Contribution to journalArticlepeer-review


It is shown that methods of kinetic analysis, which have been developed for DTG, are not directly applicable to DTA. This is because the reaction rate, -dx/dt, is not proportional to the DTA signal ΔT, but rather to ΔT + (C/K)d(ΔT)/dt, where C is the heat capacity of the sample and K is the heat transfer coefficient. Only when the sample is small, the error arising from using these methods for DTA is negligible. This is demonstrated for 'computer DTA curves'. A method for the kinetic analysis of general DTA peaks is suggested.

Original languageEnglish
Pages (from-to)97-101
Number of pages5
JournalThermochimica Acta
Issue numberC
StatePublished - Oct 1988


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