Activation energy for the ignition of the catalytic oxidation of methanol in oscillatory regime

Abstract

The overall activation energy for the ignition of thermokinetic oscillations observed (in a dynamic calorimeter) during the heterogeneous catalytic oxidation of methanol on Pd/LiAl 5 O 8 were obtained and discussed by a PdO x redox cycle.

Activation energy of heterogeneous catalytic oxidation of methanol in oscillatory regime

“…The results can be qualitatively modeled as follows 14 : in the high-temperature range, the heated Pd clusters of the catalyst become progressively covered by oxygen which leads to slow oxidation of Pd. 3,15,16 At the same time the methanol is adsorbed on the surface and the temperature decreases reaching the low-temperature stage.…”