Dehydrogenation of n-butane to butadiene-1,3: 3. Kinetics of regeneration of coked aluminochromium catalyst

The kinetics of coke burning off at temperatures of 525–650 °C on a K-CrOx/γ-Al2O3 catalyst for single-stage dehydrogenation of n-butane to butadiene-1,3, similar to the industrial one, was studied. It was shown that under the studied conditions, the coke burning off reaction is described by a first-order kinetic equation with respect to oxygen and coke with an observed activation energy of ~93 kJ/mol. The adequacy of the kinetic model was confirmed by the coincidence of the calculated and experimental results.