Title of article
The non-isothermal kinetics analysis of the thermal decomposition of kaolinite by Effluent Gas Analysis technique
Author/Authors
Pt??ek، نويسنده , , Petr and ?oukal، نويسنده , , Franti?ek and Opravil، نويسنده , , Tom?? and Noskov?، نويسنده , , Magdaléna and Havlica، نويسنده , , Jarom?r and Brand?tetr، نويسنده , , Ji??، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
5
From page
272
To page
276
Abstract
The thermal decomposition of kaolin with high-content of the medium ordered kaolinite was studied by Effluent Gas Analysis (EGA) under non-isothermal conditions. This technique enables to distinguish two overlaying processes during the thermal decomposition of kaolin: oxidation of organic compounds and dehydroxylation. The kinetic of non-isothermal dehydroxylation of kaolinite is controlled by the rate of the third-order reaction. For the given reaction mechanism, the overall activation energy (EA) and pre-exponential (frequency) factor (A) values are 242 kJ mol−1 and 2.21 × 108 s−1, respectively.
Keywords
Heterogeneous kinetics , Effluent gas analysis , Kaolin , Non-isothermal dehydroxylation , Kaolinite , Activation energy
Journal title
Powder Technology
Serial Year
2010
Journal title
Powder Technology
Record number
1699754
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