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| Titel |
Rate coefficients for the gas-phase reaction of OH with (Z)-3-hexen-1-ol, 1-penten-3-ol, (E)-2-penten-1-ol, and (E)-2-hexen-1-ol between 243 and 404 K |
| VerfasserIn |
M. E. Davis, J. B. Burkholder |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 11, no. 7 ; Nr. 11, no. 7 (2011-04-08), S.3347-3358 |
| Datensatznummer |
250009597
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| Publikation (Nr.) |
 copernicus.org/acp-11-3347-2011.pdf |
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| Zusammenfassung |
Rate coefficients, k, for the gas-phase reaction of the OH
radical with (Z)-3-hexen-1-ol (Z)-CH3CH2CH = CHCH2CH2OH) (k1),
1-penten-3-ol (CH3CH2CH(OH)CH = CH2) (k2),
(E)-2-penten-1-ol ((E)-CH3CH2CH = CHCH2OH)
(k3), and (E)-2-hexen-1-ol
((E)-CH3CH2CH2CH = CHCH2OH) (k4), unsaturated
alcohols that are emitted into the atmosphere following vegetation wounding,
are reported. Rate coefficients were measured under pseudo-first-order
conditions in OH over the temperature range 243–404 K at pressures
between 20 and 100 Torr (He) using pulsed laser photolysis (PLP) to produce
OH radicals and laser induced fluorescence (LIF) to monitor the OH temporal
profile. The obtained rate coefficients were independent of pressure with
negative temperature dependences that are well described by the Arrhenius
expressions
k1(T) = (1.3 ± 0.1) × 10−11 exp[(580 ± 10)/T];
k1(297 K) = (1.06 ± 0.12) × 10−10
k2(T) = (6.8 ± 0.7) × 10−12 exp[(690 ± 20)/T];
k2(297 K) = (7.12 ± 0.73) × 10−11
k3(T) = (6.8 ± 0.8) × 10−12 exp[(680 ± 20)/T];
k3(297 K) = (6.76 ± 0.70) × 10−11
k4(T) = (5.4 − 0.6) × 10−12 exp[(690 ± 20)/T];
k4(297 K) = (6.15 ± 0.75) × 10−11
(in units of cm3 molecule−1 s−1). The quoted
uncertainties are at the 2σ (95% confidence) level and include
estimated systematic errors. The rate coefficients obtained in this study
are compared with literature values where possible. |
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