Evaluation of the kinetic parameters for the thermal decomposition of natural Turkish limestones from their thermogravimetric curves using a computer programme

Erosy-Mericboyu A., Kucukbayrak S., Durus B.

Journal of thermal analysis, vol.39, no.6, pp.707-714, 1993 (Scopus) identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 6
  • Publication Date: 1993
  • Journal Name: Journal of thermal analysis
  • Journal Indexes: Scopus
  • Page Numbers: pp.707-714
  • Istanbul Technical University Affiliated: Yes

Abstract

The kinetic parameters, activation energy (E) and reaction order (n), of the thermal decomposition of various natural Turkish limestones were evaluated from non-isothermal TG curves by using a BASIC computer programme. The TG curves of 18 different natural limestones were obtained under identical experimental conditions. In the computer programme developed in this study a kinetic equation based on the Coats-Redfern method was used. A kinetic compensation effect between the Arrhenius parameters (E and log A) was observed and this effect was expressed as log A=0.215·E-1.872.