Direct rate constant measurements for the reaction of ground-state atomic oxygen with ethylene, 244-1052 K

Journal Article · Thu Mar 12 00:00:00 EST 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100290a057· OSTI ID:6808827

Klemm, R B; Nesbitt, F L; Skolnik, E G; Lee, J H; Smalley, J F

The rate constant for the reaction of ground-state atomic oxygen with ethylene was determined by using two techniques: flash photolysis-resonance fluorescence (FP-RF, 244-1052 K) and discharge flow-resonance fluorescence (DF-RF, 298-1017 K). Kinetic complications due to the presence of molecular oxygen in the FP-RF experiments at high temperatures (T > 800 K) were overcome by using NO as the photolytic source of the O atoms. The rate constant, k/sub 1/ (T), derived in this study exhibits extreme non-Arrhenius behavior, but it can be successfully fit to the sum of exponentials expression, 244-1052 K, k/sub 1/(T) = (1.02 +/- 0.06) x 10/sup -11/ exp(-753 +/- 17 K/T) + (2.75 +/- 0.26) x 10/sup -10/ exp(-4220 +/- 550 K/T), in units of cm/sup 3/ molecule/sup -1/ s/sup -1/. Additionally, a fit of the results of this work to a simple transition-state theory expression and the comparison of these results with those of other workers are discussed.

• Research Organization: Brookhaven National Lab., Upton, NY
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6808827
• Journal Information: J. Phys. Chem.; (United States), Vol. 91:6
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ETHYLENE
CHEMICAL REACTIONS
NITRIC OXIDE
PHOTOLYSIS
OXYGEN
GROUND STATES
CHEMICAL REACTION KINETICS
EXPERIMENTAL DATA
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
HIGH TEMPERATURE
LOW TEMPERATURE
MEDIUM TEMPERATURE
RESONANCE ABSORPTION
VERY HIGH TEMPERATURE
ABSORPTION
ALKENES
CHALCOGENIDES
DATA
DECOMPOSITION
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY LEVELS
HYDROCARBONS
INFORMATION
KINETICS
LUMINESCENCE
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
REACTION KINETICS
SPECTROSCOPY
400201* - Chemical & Physicochemical Properties
400500 - Photochemistry