The reaction of OH with acetaldehyde and deuterated acetaldehyde: Further insight into the reaction mechanism at both low and elevated temperatures

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Article on the reaction of OH with acetaldehyde and deuterated acetaldehyde and further insight into the reaction mechanism at both low and elevated temperatures.

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7 p.

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Taylor, Philip H.; Yamada, Takahiro & Marshall, Paul June 8, 2006.

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Article on the reaction of OH with acetaldehyde and deuterated acetaldehyde and further insight into the reaction mechanism at both low and elevated temperatures.

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7 p.

Notes

Abstract: The pulsed laser photolysis/laser-induced fluorescence technique has been used to conduct additional measurements of the gas-phase CH3CHO + OH reaction. These measurements were conducted to verify the complex temperature dependence previously observed by the authors and to acquire mechanistic information about the reaction mechanism in the form of primary kinetic isotope effects. Primary kinetic isotope effect measurements at temperatures of 297, 383, 600, and 860 K indicate that H abstraction from the acetyl group dominates that of the methyl group at low to modest temperatures (⩽600 K) and H abstraction from the methyl group dominates that from the acetyl group at higher temperatures (860 K). A bi-exponential fit to all experimental measurements of the CH3CHO + OH reaction published since 1990, excluding our prior results (Taylor et al., Symp (Int) Combust (Proc) 1996, 26, 497) that were approximately 20-30% lower than the present results, resulted in the following expression (in units of cm3 molecule(-1)(s-1): k (202-860 K) = 8.36 x 10 (-11) * exp (-2410.3/T) + 4.34 x 10(-12)* exp (368.9/T).

Copyright © 2006 Wiley Periodicals, Inc.

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  • International Journal of Chemical Kinetics, 2006, Hoboken: John Wiley & Sons, pp. 489-495

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  • Publication Title: International Journal of Chemical Kinetics
  • Volume: 38
  • Issue: 8
  • Page Start: 489
  • Page End: 495
  • Pages: 7
  • Peer Reviewed: Yes

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  • June 8, 2006

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  • March 17, 2015, 10:38 a.m.

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Taylor, Philip H.; Yamada, Takahiro & Marshall, Paul. The reaction of OH with acetaldehyde and deuterated acetaldehyde: Further insight into the reaction mechanism at both low and elevated temperatures, article, June 8, 2006; [Hoboken, New Jersey]. (digital.library.unt.edu/ark:/67531/metadc501415/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.