A High-Temperature Photochemistry Kinetics Study of the Reaction of O(³P) Atoms with Ethylene from 290 to 1510 K

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Article on a high-temperature photochemistry kinetics study of the reaction of oxygen(³P) atoms with ethylene from 290 to 1510 K.

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6 p.

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Mahmud, Khaled; Marshall, Paul & Fontijn, A. (Arthur) March 1, 1987.

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Article on a high-temperature photochemistry kinetics study of the reaction of oxygen(³P) atoms with ethylene from 290 to 1510 K.

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6 p.

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Abstract: The O + C₂H₄ reaction has been investigated in a high-temperature photochemistry (HTP) reactor at temperatures from 290 to 1510 K and pressures from 60 to 500 Torr. Ground-state O atoms were generated by flash photolysis of CO₂ and monitored by time-resolved atomic resonance fluorescence with pulse counting. Measurements were made under pseudo-first-order conditions [O] ≪ [C₂H₄]. Rate coefficients from 290 to 850 K are in good agreement with the numerous earlier measurements in that range. Above those temperatures a sharp rise in k(T) with increasing T is evident. On the basis of present and other measurements by isolated elementary reaction techniques we recommend k(T) = 1.3 x 10⁻¹¹ exp(-830 K/T) + 1.9 x 10⁻⁹, exp(-6940 K/T) cm³ molecule⁻¹ s⁻¹ as a fit expression for the 290-1510 K range. Confidence limits are discussed in the text. It is shown that the accepted transition-state treatment for channels significant at T < 850 K cannot account for the sharp upward curvature. Other channels will have to be considered at higher temperatures.

Reprinted with permission from the Journal of Physical Chemistry. Copyright 1987 American Chemical Society.

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  • Journal of Physical Chemistry, 1987, Washington D.C.: American Chemical Society, pp. 1568-1573

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Publication Information

  • Publication Title: Journal of Physical Chemistry
  • Volume: 91
  • Issue: 6
  • Page Start: 1568
  • Page End: 1573
  • Pages: 6
  • Peer Reviewed: Yes

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  • June 13, 1986

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  • September 24, 1986

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  • March 1, 1987

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  • April 25, 2015, 8:59 p.m.

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Mahmud, Khaled; Marshall, Paul & Fontijn, A. (Arthur). A High-Temperature Photochemistry Kinetics Study of the Reaction of O(³P) Atoms with Ethylene from 290 to 1510 K, article, March 1, 1987; [Washington, D.C.]. (digital.library.unt.edu/ark:/67531/metadc503248/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.