%0 Journal Article %1 Feierabend:2008p2263 %A Feierabend, Karl J %A Zhu, Lei %A Talukdar, R. K %A Burkholder, James B %D 2008 %J Journal of Physical Chemistry A %K Atmospheric Chemistry, Constants, Gas-Phase, Hydroxyl Initiated Mechanism, Oh Organic-Compounds Oxidation, Photolysis, Product Radical Radicals, Rate Reactions, Yields, %N 1 %P 73--82 %R 10.1021/jp076857.1 %T Rate Coefficients for the OH+HC(O)C(O)H (glyoxal) Reaction between 210 and 390 %U http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=Papers&UT=000252122300010&SID=4FmEEk3OFc8K9DpCib5&Init=Yes&SrcAuth=mekentosj&mode=FullRecord&customersID=mekentosj&DestFail=http%253A%252F%252Faccess.isiproducts.com%252Fcustom_images%252Fwok_failed_auth.html %V 112 %X Rate coefficients, k(1)(T), over the temperature range of 210-390 K are reported for the gas-phase reaction OH + HC(O)C(O)H (glyoxal) -> products at pressures between 45 and 300 Torr (He, N-2). Rate coefficients were determined under pseudo-first-order conditions in OH using pulsed laser photolysis production of OH radicals coupled with OH detection by laser-induced fluorescence. The rate coefficients obtained were independent of pressure and bath gas. The room-temperature rate coefficient, k(1)(296 K), was determined to be (9.15 +/- 0.8) x 10(-12) cm(3) molecule(-1) s(-1). k(1)(T) shows a negative temperature dependence with a slight deviation from Arrhenius behavior that is reproduced over the temperature range included in this study by k(1)(T) = (6.6 +/- 0.6) x 10(-18)T-2exp(820 +/- 30/T) cm(3) molecule(-1) s(-1). For atmospheric modeling purposes, a fit to an Arrhenius expression over the temperature range included in this study that is most relevant to the atmosphere, 210-296 K, yields k(1)(T) = (2.8 +/- 0.7) x 10(-12) exp(340 +/- 50)/T cm(3) molecule(-1) s(-1) and reproduces the rate coefficient data very well. The quoted uncertainties in k(1)(T) are at the 95% confidence level (2 sigma) and include estimated systematic errors. Comparison of the present results with the single previous determination of k(1)(296 K) and a discussion of the reaction mechanism and non-Arrhenius temperature dependence are presented.

@article{Feierabend:2008p2263, abstract = {Rate coefficients, k(1)(T), over the temperature range of 210-390 K are reported for the gas-phase reaction OH + HC(O)C(O)H (glyoxal) -> products at pressures between 45 and 300 Torr (He, N-2). Rate coefficients were determined under pseudo-first-order conditions in OH using pulsed laser photolysis production of OH radicals coupled with OH detection by laser-induced fluorescence. The rate coefficients obtained were independent of pressure and bath gas. The room-temperature rate coefficient, k(1)(296 K), was determined to be (9.15 +/- 0.8) x 10(-12) cm(3) molecule(-1) s(-1). k(1)(T) shows a negative temperature dependence with a slight deviation from Arrhenius behavior that is reproduced over the temperature range included in this study by k(1)(T) = [(6.6 +/- 0.6) x 10(-18)]T-2[exp([820 +/- 30]/T)] cm(3) molecule(-1) s(-1). For atmospheric modeling purposes, a fit to an Arrhenius expression over the temperature range included in this study that is most relevant to the atmosphere, 210-296 K, yields k(1)(T) = (2.8 +/- 0.7) x 10(-12) exp[(340 +/- 50)/T] cm(3) molecule(-1) s(-1) and reproduces the rate coefficient data very well. The quoted uncertainties in k(1)(T) are at the 95% confidence level (2 sigma) and include estimated systematic errors. Comparison of the present results with the single previous determination of k(1)(296 K) and a discussion of the reaction mechanism and non-Arrhenius temperature dependence are presented.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {NOAA, Div Chem Sci, Earth Syst Res Lab, Boulder, CO 80305 USA}, author = {Feierabend, Karl J and Zhu, Lei and Talukdar, R. K and Burkholder, James B}, biburl = {https://www.bibsonomy.org/bibtex/2b9b3f99ba8da912200ab3ced1c70ca8c/gsmith}, date-added = {2010-03-23 14:06:37 -0400}, date-modified = {2010-03-23 15:12:31 -0400}, doi = {10.1021/jp076857.1}, interhash = {729bfb5253a8ec9cbf9dc36ad66e4667}, intrahash = {b9b3f99ba8da912200ab3ced1c70ca8c}, journal = {Journal of Physical Chemistry A}, keywords = {Atmospheric Chemistry, Constants, Gas-Phase, Hydroxyl Initiated Mechanism, Oh Organic-Compounds Oxidation, Photolysis, Product Radical Radicals, Rate Reactions, Yields,}, language = {English}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Journal%20of%20Physical%20Chemistry%20A/2008/Journal%20of%20Physical%20Chemistry%20A,%20112,%2073-82%202008.pdf}, month = Jan, number = 1, pages = {73--82}, pmid = {000252122300010}, rating = {0}, read = {Yes}, timestamp = {2010-06-22T19:38:53.000+0200}, title = {Rate Coefficients for the OH+HC(O)C(O)H (glyoxal) Reaction between 210 and 390}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p2263}, url = {http://apps.isiknowledge.com/InboundService.do?Func=Frame&product=WOS&action=retrieve&SrcApp=Papers&UT=000252122300010&SID=4FmEEk3OFc8K9DpCib5&Init=Yes&SrcAuth=mekentosj&mode=FullRecord&customersID=mekentosj&DestFail=http%253A%252F%252Faccess.isiproducts.com%252Fcustom_images%252Fwok_failed_auth.html}, volume = 112, year = 2008 }