Pressure dependence of the absolute rate constant for the reaction OH+C2H2 from 228 to 413 K

Article abstract of DOI:10.1063/1.440147

The pressure dependence of absolute rate constants for the reaction of OH+C2H2-> products has been examined at five temperatures ranging from 228 to 413 K.The experimental technique which was used is flash photolysis-resonance fluorescence (FP-RF).OH was produced by water photolysis and hydroxyl resonance fluorescent photons were measured by multiscaling techniques.The results indicate that the low pressure bimolecular rate constant is ca.4*10^-13 cm³molecule^-1s^-1 over the temperature range studied.A substantial increase in the bimolecular rate constant withan increase in pressure was observed at all temperatures except 228 K.This indicates the importance of initial adduct formation and subsequent stabilization.The high pressure results are well represented by the Arrhenius expression (k_bi)_infinite=(6.83+/-1.19)*10^-12 exp(-646+/-47/T) cm³molecule^-1s^-1.The present results are compared to previous investigations and are theoretically discussed.The implications of these results on modeling of terrestrial and planetary atmospheres and also in combustion chemistry are discussed.

Full text of DOI:10.1063/1.440147

Pressure dependence of the absolute rate constant for the reaction OH+C2H2 from 228
to 413 K
J. V. Michael, D. F. Nava, R. P. Borkowski, W. A. Payne, and L. J. Stief
Citation: The Journal of Chemical Physics 73, 6108 (1980); doi: 10.1063/1.440147
View online: http://dx.doi.org/10.1063/1.440147
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/73/12?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
130.113.111.210 On: Mon, 22 Dec 2014 03:08:34