The kinetics of the oxidation of propylene over a bismuth molybdate catalyst

Using statistical design procedures an initial‐rate study of the oxidation of propylene over a silica‐supported bismuth molybdate catalyst was carried out using a differential‐bed reactor over the following range of conditions: temperatures from 350 to 390°C, oxygen and propylene concentrations from 1.0 to 8.0 mmol/L. Among the models considered a Redox Steady‐State Model (with half‐order oxygen concentration) involving oxygen adsorption and reaction with propylene from the gas phase was found to provide the best fit to the data.