Origin and Justification of the Use of the Arrhenius Relation to Represent the Reaction Rate of the Thermal Decomposition of a Solid

Degradation models are commonly used to describe the generation of combustible gases when predicting fire behavior. A model may include many sub-models, such as heat and mass transfer models, pyrolysis or mechanical models. The sub-models require definition a decomposition mechanism associated reaction rates. Arrhenius-type equations quantify allow representation chemical function temperature. This rate originated from study gas-phase reactions, but it has been extrapolated liquid solid decomposition. Its extension degradation needs be justified because using an formulation implies important simplifications that potentially questionable. describes these their potential consequences comes quantification solid-phase Furthermore, critical analysis existing thermal is presented evaluate implications equation mass-loss rates gaseous fuel production for predictions.