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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Ed. by Rademann, Klaus

12 Issues per year


IMPACT FACTOR 2016: 1.012

CiteScore 2016: 0.99

SCImago Journal Rank (SJR) 2016: 0.463
Source Normalized Impact per Paper (SNIP) 2016: 0.470

Online
ISSN
2196-7156
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Volume 225, Issue 9-10 (Oct 2011)

Issues

3CH2 + O2: Kinetics and Product Channel Branching Ratios

Mark A. Blitz / Claudia Kappler / Michael J. Pilling / Paul W. Seakins
Published Online: 2011-09-23 | DOI: https://doi.org/10.1524/zpch.2011.0138

Abstract

The kinetics of and the yield of OH in the reaction 3CH2 + O2 has been studied at room temperature using pulsed laser photolysis of ketene at 351 nm with detection of OH by LIF. The kinetics were determined from a biexponential analysis of the growth and decay of the OH signal. The rate coefficients obtained from the profiles for OH(v=0,1) are (2.39 ± 0.26) and (2.33 ± 0.28) × 1012 cm3 molecule−1 s−1 respectively. The rate coefficient for 3CH2 + NO was also measured from the growth of the OH(v=1) signal, giving k3 = (4.52 ± 0.48) × 1011 cm3 molecule−1 s−1. The ratio of the yields of OH in the two reactions 3CH2+O2 and 3CH 2+NO was determined from analysis of back to back OH profiles with O2 and NO as co-reactant; the ratio obtained, at 300 K, was 2.96 ± 0.14. This result was combined with other experimental product yields on these two reactions to obtain a consistent set channel yields for 3CH2+O2 and 3CH2+NO at ∼300 K.

Keywords: triplet methylene; reaction with O2; OH yields; branching ratios

About the article

* Correspondence address: University of Leeds, School of Chemistry, Leeds, LS2 9JT, Großbritannien


Published Online: 2011-09-23

Published in Print: 2011-10-01


Citation Information: Zeitschrift für Physikalische Chemie, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1524/zpch.2011.0138.

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© by Oldenbourg Wissenschaftsverlag, Leeds, LS2 9JT, Germany. Copyright Clearance Center

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[1]
David L. Osborn and Craig A. Taatjes
International Reviews in Physical Chemistry, 2015, Volume 34, Number 3, Page 309
[2]
Tom R. Lewis, Mark A. Blitz, Dwayne E. Heard, and Paul W. Seakins
Phys. Chem. Chem. Phys., 2015, Volume 17, Number 7, Page 4859
[3]
Xiaobo Shen, Xueliang Yang, Jeffrey Santner, Jinhua Sun, and Yiguang Ju
Proceedings of the Combustion Institute, 2015, Volume 35, Number 1, Page 721
[4]
Daniel Stone, Mark Blitz, Laura Daubney, Neil U. M. Howes, and Paul Seakins
Phys. Chem. Chem. Phys., 2014, Volume 16, Number 3, Page 1139
[5]
Bin Ouyang, Matthew W. McLeod, Roderic L. Jones, and William J. Bloss
Physical Chemistry Chemical Physics, 2013, Volume 15, Number 40, Page 17070
[6]
James Lockhart, Mark A. Blitz, Dwayne E. Heard, Paul W. Seakins, and Robin J. Shannon
The Journal of Physical Chemistry A, 2013, Volume 117, Number 26, Page 5407
[7]
Robert J. Salter, Mark A. Blitz, Dwayne E. Heard, Tamás Kovács, Michael J. Pilling, Andrew R. Rickard, and Paul W. Seakins
Physical Chemistry Chemical Physics, 2013, Volume 15, Number 14, Page 4984
[8]
M. A. Blitz and P. W. Seakins
Chemical Society Reviews, 2012, Volume 41, Number 19, Page 6318

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