RATE AND MECHANISM OF METHANE PYROLYSIS FROM 2000 degree TO 2700 degree K.

W. C. Gardiner*, J. H. Owen, T. C. Clark, J. E. Dove, S. H. Bauer, J. A. Miller, W. J. McLean

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The pyrolysis of methane in shock waves was studied using TOF mass spectrometry, IR laser absorption, and laser schlieren techniques. The experiments spanned the temperature range 2000-2700 degree K and the pressure range 20-160 kPa. The results indicate that ethylene and acetylene are formed as methane disappears. Computer simulations showed that a quantitative account for these results is afforded by mechanisms involving methyl radical chains. A set of rate constant expressions for one plausible mechanism was derived and shown also to be compatible with other studies of methane decomposition. Molecular-orbital estimates of likely reaction pathways also support this mechanism. It is inferred that methane combustion is accompanied by chain-reaction pyrolysis to a far greater degree than hitherto supposed.

Original languageEnglish (US)
Pages (from-to)857-868
Number of pages12
Journal[No source information available]
StatePublished - Jan 1 1975

ASJC Scopus subject areas

  • Engineering(all)

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