Solid-state kinetic reactions at high temperatures - Models and applications

Understanding the kinetic mechanisms of reactions requires a comprehensive approach, involving morphological, crystallographic and other characterizations, as well as measurements of reaction rates. Kinetics/mechanics, kinetics/composition or kinetics/morphology couplings are systematically responsible for the observed behavior of reactive solids. The study of elementary reaction rates, with the search for the limiting step, however essential it may be (see [AF 3 688] ), is often insufficient to account for experimental kinetic observations. This is why, even if thermogravimetry remains the main instrument for kinetic characterization, this branch of the physical sciences is undergoing major experimental development, in line with current advances in characterization equipment. Attempts continue to be made to model complex phenomena: progress can also be expected in this field, with the increase in computing power, and, simultaneously, with the ever finer definitions of solids made possible by advances in their characterization.