Heterogeneous Processes in the Partial Oxidation of Methane to Oxygenates

ON THE INTERPLAY BETWEEN THE HOMOGENEOUS AND HETEROGENEOUS-CATALYTIC PROCESSES OF METHANE OXIDATION  

The catalytic reactions of methane reforming to syngas, oxidative coupling of methane to ethane and ethylene, direct oxidation of methane to methanol and formaldehyde occur at relatively high temperatures, 400—1000 °C, i.e., can be qualified as high-temperature catalytic oxidation processes. Numerous studies of these reactions, different in many ways, showed, however, that they have a number of common features, the most important of which are  

The proportionality of the reaction rate to the methane partial pressure to the first power. 

The weak dependence of the reaction rate, if any, on the partial pressure of oxygen  

The manifestation of the kinetic isotope effect of the reaction rate (in most cases, fccH4/ fccD4 1)  

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