Abstract
This paper describes the investigations carried out on the kinetics of the vapour-phase ammoxidation of 3-methyl-pyridine to 3-cyanopyridine, over a Cr2O3 promoted V2O5Al2O3 catalyst. The reaction was carried out in a packed bed flow reactor at atmospheric pressure and in the temperature range 300–370°C. The data obtained in an integral reactor were interpreted by Langmuir-Hinshelwood mechanism, wherein the surface reaction between an adsorbed 3-methylpyridine molecule and an adsorbed oxygen atom was found to be the rate controlling step. The parameter values in the rate expression were estimated by non-linear regression analysis. The activation energy involved in this reaction was found to be 20.6 kcal/g mole.
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