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©NIST, 2013
Accessibility information
Author(s):   Peukert, S. L.; Labbe, N. J.; Sivaramakrishnan, R.; Michael, J. V.
Title:   Direct Measurements of Rate Constants for the Reactions of CH3 Radicals with C2H6, C2H4, and C2H2 at High Temperatures
Journal:   J. Phys. Chem. A
Volume:   117
Page(s):   10228 - 10238
Year:   2013
Book Title:   ''
Editor:   ''
Publisher:   ''
Publisher address:   ''
Comments:   ''
Reference type:   Journal article
Squib:   2013PEU/LAB10228-10238

Reaction:   C2H2 + ·CH3CH3CCH +
Reaction order:   2
Temperature:   1127 - 1346 K
Pressure:  1.00 bar
Rate expression:   5.16x10-13 [cm3/molecule s] e-32027 [J/mole]/RT
Category:  Experiment
Data type:   Derived from fitting to a complex mechanism
Pressure dependence:   None reported
Experimental procedure:   Shock tube
Excitation technique:   Thermal
Time resolution:   In real time
Analytical technique:   Vis-UV absorption
Comments:   H atoms were monitored with H-atom Atomic Resonance Absorption Spectrometry (ARAS). Fits to the H-atom temporal profiles using an assembled kinetics model were used to make rate constant determinations.

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Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
1127 1.69E-14
1150 1.81E-14
1175 1.94E-14
1200 2.08E-14
1225 2.22E-14
1250 2.37E-14
1275 2.52E-14
1300 2.67E-14
1325 2.82E-14
1346 2.95E-14