Mathematical Models for Gas--Solid Reactions

摘要

Several gas-solid reactions are found in thermochemical hydrogen cycles. A thorough understanding of the kinetics of such reactions is thus desired in order to apply such cycles for hydrogen production. Six basic mathematical models are chosen for study from the various ones formulated by other investigators. Approximations have been made for all these models such that they are mathematically analytical. Their applicability under various conditions is evaluated. Mathematical expressions of conversion-time, effectiveness factor, concentration profiles for each model are summarized. The various methods for determination of physical properties of the solid are reviewed. A general method of experimental investigation is outlined. (ERA citation 03:052203)