Author: A. Abdullah CEYHAN, Halil DEMİR, Ömer ŞAHİN
Publishing Date: 2009
E-ISSN: 2147-9364
Volume 24 Issue 1
ABSTRACT:
The thermal decomposition of potassium tetraborate tetrahydrate to potassium tetraborate were studied by using the traditional criterion of the mathematical fitting of g(α) function and model free linear isoconversional methods. The nonisothermal kinetic triplet (f(α), A and E) obtained by model fitting method for potassium tetraborate tetrahydrate can be represented by different kinetic model, but the apparent activation energy is far from each other. The complex nature of the multi‐step process of the studied compounds was more easily revealed using a wider temperature range in nonisothermal isoconversional method.
Key Words: Kinetic triplet, model fitting, model free isoconversional method, potassium tetraborate tetrahydrate.