Homogeneous high-temperature oxidation of methane |
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| Authors: | Artem A Slepterev Valerii S Salnikov Pavel G Tsyrulnikov Aleksandr S Noskov Viktor N Tomilov Nataliya A Chumakova and Andrey N Zagoruiko |
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| Institution: | (1) Institute of Hydrocarbon Processing SB RAS, Neftezavodskaya str., 54, 644040 Omsk, Russia;(2) Boreskov Institute of Catalysis SB RAS, Pr. Akad. Lavrentieva 5, 630090 Novosibirsk, Russia |
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| Abstract: | The kinetics of homogeneous deep oxidation of methane in lean mixtures (up to 2 vol % CH4 in air) in ceramic tubes and fixed beds of ceramic spheres was studied. Experiments with the homogeneous reaction have shown
that the methane oxidation occurs via a consecutive scheme through CO formation. The reaction rate of CH4 oxidation was found to depend upon the equivalent pass diameter with a significant reaction inhibition in packing of small
tubes and spheres, reflecting the influence of mass transfer on the radical-chain termination at the ceramic surfaces. It
was also found that CO oxidation practically does not depend upon the mass exchange conditions, but it is visibly inhibited
by methane. Recommended kinetic equations and their parameters are presented. |
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| Keywords: | Methane oxidation homogeneous reactions kinetics lean mixtures |
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