Abstract
This study proposes an approach developed for predicting the conversion–temperature curve of catalytic oxidation of multicomponent organic waste gases. The mathematical models of these catalytic oxidations for the Langmuir–Hinshelwood, Eley–Rideal, and Mars–van Krevelen kinetic mechanisms were developed. The results of three case studies involving five commonly industrially used hydrocarbons showed that the constructed mathematical model was accurate; the range of average absolute relative error between the modeling and experimental temperatures of the five hydrocarbons in catalytic oxidations of mixtures was 2.5–6.8%. The biases of conversion–temperature curves obtained through modeling decrease with increasing conversion rates. The reaction rate of a hydrocarbon during competitive oxidations of multicomponent organic gases was controlled through composite probabilities of their reaction rates and adsorption equilibrium constants on a catalyst surface. This study also investigated the effects of the apparent reaction rate and adsorption equilibrium constants on catalytic oxidation.
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