Kinetics of the reactions of the CF[sub 3]O radical with alkanes

Journal Article · Thu Apr 28 00:00:00 EDT 1994 · Journal of Physical Chemistry; (United States)

DOI:https://doi.org/10.1021/j100068a020· OSTI ID:7019497

Barone, S B; Turnipseed, A A; Ravishankara, A R ^[1]

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1. National Oceanic and Atmospheric Administration, Boulder, CO (United States) Univ. of Colorado, Boulder, CO (United States)

Utilizing the technique of pulsed laser photolysis/pulsed laser induced fluorescence, we have investigated the atmospherically important reactions of the (trifluoromethyl)peroxy radical, CF[sub 3]O, with several alkanes. The reaction rate coefficients for CF[sub 3]O + CH[sub 4] (k[sub 3]), C[sub 2]H[sub 6] (k[sub 4]), C[sub 3]H[sub 8] (k[sub 5]), (CH[sub 3])[sub 3]CH (k[sub 6]), and CD[sub 4] (k[sub 7]) were measured, as functions of temperature, to be k[sub 3] = (1.92 [+-] 0.33) x 10[sup [minus]12] exp[[minus](1370 [+-] 85)/T] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1], k[sub 4] = (4.84 [+-] 1.11) x 10[sup [minus]12] exp[-(400 [+-] 70)/T] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1], k[sub 5] = (5.12 [+-] 1.12) x 10[sup [minus]12] exp[-(15 [+-] 30)/T] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1], k[sub 6] = (4.32 [+-] 0.42) x 10[sup [minus]12] exp[(135 [+-] 30)/T] cm[sup 3] molecule[sup 1] s[sup [minus]1], and k[sub 7] = (0.91 [+-] 0.31) x 10[sup [minus]12] exp[-(1540 [+-] 100)] cm[sup 3] molecule[sup [minus]1] s[sup [minus]1], respectively. These kinetic data are compared with results from previous studies. The atmospheric implications of these findings are discussed. 28 refs., 7 figs., 4 tabs.

• OSTI ID: 7019497
• Journal Information: Journal of Physical Chemistry; (United States), Journal Name: Journal of Physical Chemistry; (United States) Vol. 98:17; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

2-METHYLPROPANE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
54 ENVIRONMENTAL SCIENCES
540110
ALKANES
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DEUTERIUM COMPOUNDS
ETHANE
EXCIMER LASERS
EXPERIMENTAL DATA
FLUORESCENCE
GAS LASERS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
KINETICS
LASERS
LUMINESCENCE
METHANE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
PROPANE
RADICALS
REACTION KINETICS