%0 Journal Article %1 Takahashi:2007p3364 %A Takahashi, Kenshi %A Iwasaki, Erika %A Matsumi, Yutaka %A Wallington, Timothy J %D 2007 %J Journal of Physical Chemistry A %K 298 Atmospheric Atoms, Chemistry, Chlorine Cl Constants, Emission-Spectroscopy Et-Al, K, Oh Radical Radicals, Rate Reactions, Series, Temperature, %N 7 %P 1271--1276 %R 10.1021/jp066410c %T Pulsed laser photolysis vacuum UV laser-induced fluorescence kinetic study of the gas-phase reactions of Cl(P-2(3/2)) atoms with C-3-C-6 ketones %U http://pubs.acs.org/doi/abs/10.1021/jp066410c %V 111 %X The gas-phase reactions of Cl atoms with acetone, butanone, 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, and cyclopentanone at 295 +/- 2 K were studied using pulsed laser photolysis vacuum UV laser-induced fluorescence (PLP-LIF) techniques. Cl(P-2(3/2)) atoms were produced by photolysis of Cl-2 at 351 nm and monitored by LIF spectroscopy at 134.72 nm (3p(5) (2)P(3/2-)3p(4)4s P-2(3/2) transition). Rate coefficients for reactions of Cl atoms with acetone, butanone, 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, and cyclopentanone are (2.30 +/- 0.12) x 10(-12), (4.08 +/- 0.21) x 10(-11), (1.23 +/- 0.13) x 10(-10), (8.87 +/- 0.92) x 10(-11), (2.08 +/- 0.32) x 10(-10), (1.43 +/- 0.19) x 10(-10) and (1.16 +/- 0.12) x 10(-10) cm(3) molecule(-1) s(-1), respectively. The results for acetone and butanone are consistent with previous studies. The results for 2-pentanone, 3-pentanone, 2-hexanone, and 3-hexanone are approximately a factor of 2-3 higher than those from previous absolute rate studies. Likely explanations for these discrepancies are discussed. Tropospheric lifetimes of ketones with respect to reaction with Cl atoms are estimated and discussed.

@article{Takahashi:2007p3364, abstract = {The gas-phase reactions of Cl atoms with acetone, butanone, 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, and cyclopentanone at 295 +/- 2 K were studied using pulsed laser photolysis vacuum UV laser-induced fluorescence (PLP-LIF) techniques. Cl(P-2(3/2)) atoms were produced by photolysis of Cl-2 at 351 nm and monitored by LIF spectroscopy at 134.72 nm (3p(5) (2)P(3/2-)3p(4)4s P-2(3/2) transition). Rate coefficients for reactions of Cl atoms with acetone, butanone, 2-pentanone, 3-pentanone, 2-hexanone, 3-hexanone, and cyclopentanone are (2.30 +/- 0.12) x 10(-12), (4.08 +/- 0.21) x 10(-11), (1.23 +/- 0.13) x 10(-10), (8.87 +/- 0.92) x 10(-11), (2.08 +/- 0.32) x 10(-10), (1.43 +/- 0.19) x 10(-10) and (1.16 +/- 0.12) x 10(-10) cm(3) molecule(-1) s(-1), respectively. The results for acetone and butanone are consistent with previous studies. The results for 2-pentanone, 3-pentanone, 2-hexanone, and 3-hexanone are approximately a factor of 2-3 higher than those from previous absolute rate studies. Likely explanations for these discrepancies are discussed. Tropospheric lifetimes of ketones with respect to reaction with Cl atoms are estimated and discussed.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Nagoya Univ, Solar Terrestrial Environm Lab, Aichi, Japan}, author = {Takahashi, Kenshi and Iwasaki, Erika and Matsumi, Yutaka and Wallington, Timothy J}, biburl = {https://www.bibsonomy.org/bibtex/2dc1e6fbeb8b1bd4ff065fba67c720f63/gsmith}, date-added = {2010-05-04 15:13:17 -0400}, date-modified = {2010-05-19 13:33:51 -0400}, doi = {10.1021/jp066410c}, interhash = {d81535699e7ac7e0847c640e10f3cdba}, intrahash = {dc1e6fbeb8b1bd4ff065fba67c720f63}, journal = {Journal of Physical Chemistry A}, keywords = {298 Atmospheric Atoms, Chemistry, Chlorine Cl Constants, Emission-Spectroscopy Et-Al, K, Oh Radical Radicals, Rate Reactions, Series, Temperature,}, language = {English}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Journal%20of%20Physical%20Chemistry%20A/2007/Journal%20of%20Physical%20Chemistry%20A,%20111,%201271-1276%202007.pdf}, month = Jan, number = 7, pages = {1271--1276}, pmid = {000244225000016}, rating = {0}, read = {Yes}, timestamp = {2010-06-22T19:39:10.000+0200}, title = {Pulsed laser photolysis vacuum UV laser-induced fluorescence kinetic study of the gas-phase reactions of Cl(P-2(3/2)) atoms with C-3-C-6 ketones}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p3364}, url = {http://pubs.acs.org/doi/abs/10.1021/jp066410c}, volume = 111, year = 2007 }