Absolute and relative rate constants for the reactions CH3C(O)O2 + NO and CH3C(O)O2 + NO2 and thermal stability of CH3C(O)O2NO2
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Absolute and relative rate constants for the reactions CH3C(O)O2 + NO and CH3C(O)O2 + NO2 and thermal stability of CH3C(O)O2NO2. / Sehested, Jens; Christensen, Lene Krogh; Møgelberg, Trine; Nielsen, Ole J.; Wallington, Timothy J.; Guschin, Andrei; Orlando, John J.; Tyndall, Geoffrey S.
I: Journal of Physical Chemistry A, Bind 102, Nr. 10, 05.03.1998, s. 1779-1789.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Absolute and relative rate constants for the reactions CH3C(O)O2 + NO and CH3C(O)O2 + NO2 and thermal stability of CH3C(O)O2NO2
AU - Sehested, Jens
AU - Christensen, Lene Krogh
AU - Møgelberg, Trine
AU - Nielsen, Ole J.
AU - Wallington, Timothy J.
AU - Guschin, Andrei
AU - Orlando, John J.
AU - Tyndall, Geoffrey S.
PY - 1998/3/5
Y1 - 1998/3/5
N2 - A pulse-radiolysis system was used to measure absolute rate constants for the reactions of CH3C(O)O2 radicals with NO and NO2 at 295 K and 1000 mbar total pressure of SF6. When the rate of formation and decay of NO2 using its absorption at 400.5 and 452 nm were monitored, the rate constants k(CH3C(O)O2 + NO) = (2.0 ± 0.3) × 10-11 and k(CH3C(O)O2 + NO2) = (1.0 ± 0.2) × 10-11 cm3 molecule-1 s-1 were determined. Long path-length Fourier transform infrared spectrometers were used to study the rate-constant ratio k(CH3C-(O)O2 + NO)/k(CH3C(O)O2 + NO2) in 6-700 Torr total pressure of N2 diluent at 243-295 K. At 295 K in 700 Torr of N2 diluent k(CH3C(O)O2 + NO)/k(CH3C(O)O2 + NO2) = 2.07 ± 0.21. The results are discussed in the context of the atmospheric chemistry of acetylperoxy radicals.
AB - A pulse-radiolysis system was used to measure absolute rate constants for the reactions of CH3C(O)O2 radicals with NO and NO2 at 295 K and 1000 mbar total pressure of SF6. When the rate of formation and decay of NO2 using its absorption at 400.5 and 452 nm were monitored, the rate constants k(CH3C(O)O2 + NO) = (2.0 ± 0.3) × 10-11 and k(CH3C(O)O2 + NO2) = (1.0 ± 0.2) × 10-11 cm3 molecule-1 s-1 were determined. Long path-length Fourier transform infrared spectrometers were used to study the rate-constant ratio k(CH3C-(O)O2 + NO)/k(CH3C(O)O2 + NO2) in 6-700 Torr total pressure of N2 diluent at 243-295 K. At 295 K in 700 Torr of N2 diluent k(CH3C(O)O2 + NO)/k(CH3C(O)O2 + NO2) = 2.07 ± 0.21. The results are discussed in the context of the atmospheric chemistry of acetylperoxy radicals.
UR - http://www.scopus.com/inward/record.url?scp=0001328916&partnerID=8YFLogxK
M3 - Journal article
AN - SCOPUS:0001328916
VL - 102
SP - 1779
EP - 1789
JO - Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
JF - Journal of Physical Chemistry Part A: Molecules, Spectroscopy, Kinetics, Environment and General Theory
SN - 1089-5639
IS - 10
ER -
ID: 225753859