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

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

Surgery, Transplant Surgery Division

Research output: Contribution to journal › Article › peer-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 language	English (US)
Pages (from-to)	857-868
Number of pages	12
Journal	[No source information available]
State	Published - Jan 1 1975

ASJC Scopus subject areas

Engineering(all)

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title = "RATE AND MECHANISM OF METHANE PYROLYSIS FROM 2000 degree TO 2700 degree K.",

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.",

author = "Gardiner, {W. C.} and Owen, {J. H.} and Clark, {T. C.} and Dove, {J. E.} and Bauer, {S. H.} and Miller, {J. A.} and McLean, {W. J.}",

year = "1975",

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T1 - RATE AND MECHANISM OF METHANE PYROLYSIS FROM 2000 degree TO 2700 degree K.

AU - Gardiner, W. C.

AU - Owen, J. H.

AU - Clark, T. C.

AU - Dove, J. E.

AU - Bauer, S. H.

AU - Miller, J. A.

AU - McLean, W. J.

PY - 1975/1/1

Y1 - 1975/1/1

N2 - 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.

AB - 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.

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