A Study of the Homogeneous Oxidation of Low-Concentration Methane-Containing Gases at High Temperatures
Russian Journal of Applied Chemistry
, E-ISSN: 1608-3296
Institute of Hydrocarbon Processing, Siberian Branch, Russian Academy of Sciences, Omsk, Russia
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Omsk State Technical University, Omsk, Russia
It is shown that homogeneous oxidation of methane in air in a flow-reactor at methane concentrations of 0.5–2.0 vol %, temperatures of 700–1100°C, and contact time of 0.024–0.384 s occurs via formation of CO whose concentration passes through a maximum with increasing temperature. The selectivity of methane oxidation to CO reaches values of 70–90%. The degree of methane conversion depends on reactor packing and reactor diameter, which suggests that the process occurs by the radical-chain mechanism.