In thermal analysis, the actual temperature inside the sample usually differs from the prescribed temperature. This fact may influence the evaluation of the kinetic parameters. In this paper the effects of slightly curved actual temperature-time functions are studied. It is shown that an alteration of about 5 K from the prescribed linear temperature program and its neglect in the kinetic evaluation can change the formal reaction order and the apparent activation energy by about 20%.
ASJC Scopus subject areas
- Condensed Matter Physics
- Physical and Theoretical Chemistry