EVALUATION OF THE KINETIC-PARAMETERS FOR THE THERMAL-DECOMPOSITION OF NATURAL TURKISH LIMESTONES FROM THEIR THERMOGRAVIMETRIC CURVES USING A COMPUTER-PROGRAM

ERSOYMERICBOYU A., KUCUKBAYRAK S., DURUS B.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.39, no.6, pp.707-714, 1993 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 6
  • Publication Date: 1993
  • Journal Name: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.707-714
  • Istanbul Technical University Affiliated: No

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 [1] 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.