ROLE OF SUPPORT STRUCTURE ON KINETIC PARAMETER ESTIMATIONS IN A SHELL CATALYST

The kinetic parameters for VOC oxidation by a shell catalyst are generally obtained from the experimental data of conversion-temperature in a laboratory scale isothermal fixed bed reactor. The kinetics of these reactions are often represented by a bi-molecular Langmuir-Hinshelwood expresion. With the help of experimental data for n-hexane, the present study showed that the values of the kinetic parameters estimated depend significantly upon the location and width of the active catalyst layer as well as value of the effective diffusivity of the reactant within the porous structure. The present analysis showed that accurate a priori assessment of these parameters is very important for the reliable estimations of the kinetic parameters.