Kinetic analysis of thermal decomposition of boric acid from thermogravimetric data |
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Authors: | Fatih Sevim Fatih Demir Murat Bilen Hüseyin Okur |
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Affiliation: | (1) Department of Chemical Engineering, Engineering Faculty, Atatürk University, 25240 Erzurum, Turkey;(2) Eti Holding A., Research and Development Dept., İstanbul Yolu üzeri, 9· km, Güvercinlik, Ankara, Turkey |
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Abstract: | The kinetic parameters of the thermal decomposition of boric acid have been investigated by using TGA data. Suzuki and Coats-Redfern
methods have been applied for the kinetic investigation. It was determined that decomposition kinetics of boric acid occurred
in two steps and both regions suitably fit a first-order kinetic model. According to Coats-Redfern method, the activation
energy and frequency factor were found as 79.85 kJ·mol-1 and 3.82x 104 min-1 for region I and 4.79 kJ·mol-1 and 4.045 x 10-5 min-1 for region II, respectively. The activation energies and frequency factors were found as 4.45 kJ·mol-1 and 4.08 x108 min-1 for the Suzuki method. |
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Keywords: | Boric Acid Thermal Decomposition Suzuki Method Coats-Redfern Method |
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