Abstract
Quasi-isothermal analysis (QIA) is a very useful technique. Compared to conventional non-isothermal thermogravimetry, close-lying reactions can easily be separated by use of this method and kinetic data can be obtained for each intermediate reaction in a single run. This paper discusses the shape of the weight and temperature curves expected in QIA for different controlling mechanisms, and a method is given for calculating the activation energies from these curves. As an example, the QIA curves obtained in thermal decomposition of ammonium-uranyl carbonate (AUC) are analysed and the kinetics of some of the intermediate reactions are determined.
Original language | English |
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Journal | Thermochimica Acta |
Volume | 29 |
Issue number | 2 |
Pages (from-to) | 211-214 |
ISSN | 0040-6031 |
DOIs | |
Publication status | Published - 1979 |