A NEW KIND OF PARAMETER-ESTIMATION OF REACTIONS UNDER DYNAMIC TEMPERATURE PROGRAM

For kinetic evaluation of TG, DTA and DSC of simple and complex reactions we tried to apply a parameter adjustment by means of non-linear optimization (trust-region method with Marquardt-routine). Including all experimental data and using the differential equation systems, we found many advantages over the usual linearizing methods. The problems of consecutive and competing reactions as well as those with steady states (enzyme kinetics) were solved satisfactorily if two or more data sets with different heating rates are known. Supplementary use of other analytical methods are recommendable.