SOME THEORETICAL CONSIDERATIONS ON THE APPLICATION OF DISTRIBUTED ACTIVATION ENERGY MODEL UNDER ISOTHERMAL CONDITIONS

摘要

Based on the new elucidation of distributed activation energy model(DAEM), the application of DAEM in isothermal experiments was considered theoretically. The mathematical expression of activation energy was given. According to this theory, three or more temperature levels were needed to obtain the activation energies. With artificial data, the feasibility of this theory was demonstrated. The application of DAEM in isothermal TG tests can also reveal the change of activation energies during the weight loss process for both infinite parallel reaction systems and simple reaction systems.