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Author(s):   Wilson, E.W.; Jacoby, A.M.; Kukta, S.J.; Gilbert, L.E.; DeMore, W.B.
Title:   Rate constants for reaction of CH2FCH2F (HFC-152) and CH3CHF2 (HFC-152a) with hydroxyl radicals
Journal:   J. Phys. Chem. A
Volume:   107
Page(s):   9357 - 9361
Year:   2003
Reference type:   Journal article
Squib:   2003WIL/JAC9357-9361

Reaction:   CH2FCH2F + ·OH → Products
Reaction order:   2
Reference reaction:   C2H6 + ·OH → Products
Temperature:   293 - 397 K
Pressure:  1.01 bar
Rate expression:   3.14x10-12 [cm3/molecule s] e-8722 [J/mole]/RT
Bath gas:   He
Category:  Experiment
Data type:   Relative value normalized by a reference value
Experimental procedure:   Static or low flow - Data taken vs time
Excitation technique:   Sensitized photolysis
Time resolution:   In real time
Analytical technique:   Gas chromatography
Comments:  
Reference compounds for both reactants were ethane k(OH + ethane) = 1.00*10-11*exp{-1094/T}, cm3molecule-1s-1
and cyclopropane k(OH + cyclopropane) = 7.28*10-12*exp{-1356/T}, cm3molecule-1s-1.

Also, the JPL 97-4 recommendation for HFC-152a, CH3-CHF2
k(OH + HFC-152a) = 2.4*10-12*exp{-1260/T}, cm3molecule-1s-1
was used as a reference for HFC-152 vs 152a experiments.

Uncertainties in k(298 K) and E/R are believed to be less than 10% and 100 K, respectively.

View full bibliographic record.


Rate constant values calculated from the Arrhenius expression:

T (K)k(T) [cm3/molecule s]
293 8.75E-14
300 9.51E-14
325 1.24E-13
350 1.57E-13
375 1.91E-13
397 2.24E-13