6533b7dcfe1ef96bd12732be
RESEARCH PRODUCT
Periodic behaviour in heterogeneous chemical reactions
M. LallemantJ.m. Salazarsubject
ChemistryActivated complexNumerical analysisKineticsTime evolutionOxideThermodynamicsGeneral ChemistryCondensed Matter PhysicsChemical reactionchemistry.chemical_compoundPhysical chemistryGeneral Materials ScienceDiffusion (business)Dissolutiondescription
Abstract The authors present an analytical and numerical analysis for a solid-gas oxidation process represented by a set of coupled reaction rates equations. The equations describe the time evolution of four elementary process that govern the overall heterogeneous kinetics. The description formation of a new oxide unit considers: (1) an internal interface (oxide-metal) reaction by which an activated complex is formed; (2) the dissolution of the complex produce a chemical element σ; (3) the diffusion of σ through the oxide layer; and (4) an external interface (oxide-gas) reaction. The results reported here delinate the parameter region where chemical oscillations are present.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1992-02-01 | Solid State Ionics |