An exclusive kinetic model for the methylcyclohexane dehydrogenation over alumina‐supported Pt catalysts

The experimental data of six different types of Pt‐containing alumina catalysts are used to study the detailed and rigorous kinetics of the methylcyclohexane dehydrogenation reaction. A large number of kinetic rate equations were formulated using the power law kinetics and the Langmuir‐Hinshelwood‐Hougen‐Watson (LHHW) kinetics, which were tested against the experimental data. For each catalyst, the elementary reaction step “the loss of first molecular hydrogen” in the LHHW single‐site surface reaction mechanism was observed to be the rate‐determining step. The form of the kinetic rate model developed in the study is believed to be applicable to any Pt‐loaded alumina catalyst.