On the suitability of controlled transformation rate thermal analysis (CRTA) for kinetic studies: I/ Determination of the activation energy by the rate-jump method

Abstract

The rate-jump method is introduced and illustrated in the case of the thermolysis of dolomite Ca Mg(CO 3) 2. It is shown that it leads to a value of the apparent energy of activation which is practically independent, all at once, from the function f(α), from the sample size (20 to 200 mg) and from the rate ratio (4 to 20). This may be considered as an interesting step towards the assessment of kinetic parameters characteristic of the reaction proper.