Abstract
The article offers a brand-new nonlinear method of figuring out the thermally dissolved material's free activation energy and pre-exponential factor using a non-isothermal kinetic process. The material is thermally decomposed for a known function in a conversion mass fraction and residual mass fraction under the conditions of the thermochemical reaction, which is defined by the Arrhenius equation. The experimental data establishes a new method based on the least squares method to directly calculate the free activation energy and pre-exponential factor, respectively. We assume that the researcher in a laboratory, during the process of subjecting the material to a con-stant rate of temperature increase, takes several different measurements for the conversion mass fraction with corresponding values of temperature throughout the process of thermal decomposi-tion of a material. Therefore, in this investigation, we present how to calculate the activation energy and the pre-exponential factor of a material from the information of several points for temperature values during the thermal decomposition process of a material and the corresponding conversion mass fraction. We have discovered that the more measurements we take, the more precise our cal-culations become. This approach depends on the precise analytical answer to the Arrhenius equa-tion.(c) 2022 THE AUTHORS. Published by Elsevier BV on behalf of Faculty of Engineering, Alexandria University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).