Figure 1A:
Temperature profiles containing isothermal and non-isothermal modes.

Figure 1B:
Experimental data for hydromagnesite decomposition (temperature program as in Fig.1A) are presented together with the reaction progress predictions of -T. Experimental data are represented as symbols, solid lines represent the calculated relationships -T. Accurate prediction of the thermal stability is achieved.

The measured temperature profiles containing isothermal and non-isothermal modes are shown in Fig. 1A. In Fig. 1B, corresponding experimental data are presented together with the reaction progress predictions of -T. The experimental parameters were identical in all experiments. Change of the experimental parameters such as e.g. sample mass, kind of the carrier gas and its flow rate, can considerably change the course of the thermoanalytical signals which, in turn, can distinctly influence the comparison of the predictions with the experimental data [1]. The comparison between experimental and calculated reaction extents indicates that the presented multi-step model-fitting technique allows accurate prediction of the reaction course at the temperature mode chosen.

[1] B. Roduit, M. Maciejewski and A. Baiker, Thermochim. Acta, 282/283 (1996) 101.