KINETICS AND MECHANISM OF THE PARTIAL OXIDATION OF PROPANE TO LOW-MOLECULAR CARBONYL COMPOUNDS ON A MODIFIED ZEOLITE CATALYST

The catalytic activity of natural clinoptilolite with silicate modulus, λ=SiO2/Al2O3=10,8 modified with Ca2+, Sn2+ and Li+ cations via ion exchange, has been studied in the partial oxidation of propane to low – molecular carbonyl compounds (formaldehyde, acetaldehyde, methyl alcohol, and acetic acid) under the action of oxygen. It has been established that the highest activity in this reaction is exhibited by clinoptilolite with silicate modulus λ=10,8 containing 10.0 wt% Ca2+, 7.0 wt% Sn2+ and 8.0 wt% Li+. The kinetics of this catalytic reaction is studied. Based on the experimental data, a possible stepwise mechanism is proposed, and a theoretically grounded kinetic model of the process is developed