TY - JOUR
T1 - Shock Tube Measurement of the C 2 H 4 + H ⇔ C 2 H 3 + H 2 Rate Constant
AU - Shao, Jiankun
AU - Choudhary, Rishav
AU - Peng, Yuzhe
AU - Davidson, David F.
AU - Hanson, Ronald K.
N1 - Publisher Copyright:
Copyright © 2018 American Chemical Society.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - The rate constant for the reaction C 2 H 4 + H ⇔ C 2 H 3 + H 2 was studied behind reflected shock waves at temperatures between 1619 and 1948 K and pressures near 10 atm in a mixture of C 2 H 4 , CH 4 , H 2 , and argon. C 2 H 4 time histories were measured using laser absorption of a CO 2 gas laser near 10.53 μm. Experimental mixtures were designed to optimize sensitivity to the title reaction with only weak sensitivity to secondary reactions. Two mechanisms, FFCM1 and ARAMCO v2, are used for data analysis. The well-selected operating conditions and Monte Carlo sampling data analysis procedure resulted in mechanism-independent reaction rate constant measurements with a 2σ uncertainty of ±35%. The current data disagree with a broadly used theoretical calculation (Knyazev et al. (1996)), but they are in good consensus with one of the review studies (Baulch et al. (2005)), k = (3.9 × 10 22 )T 3.62 exp(-5670/T) cm 3 molecule -1 s -1 . To the best of our knowledge, this work provides the first high-temperature study of the C 2 H 4 + H ⇔ C 2 H 3 + H 2 reaction rate constant with well-defined uncertainty.
AB - The rate constant for the reaction C 2 H 4 + H ⇔ C 2 H 3 + H 2 was studied behind reflected shock waves at temperatures between 1619 and 1948 K and pressures near 10 atm in a mixture of C 2 H 4 , CH 4 , H 2 , and argon. C 2 H 4 time histories were measured using laser absorption of a CO 2 gas laser near 10.53 μm. Experimental mixtures were designed to optimize sensitivity to the title reaction with only weak sensitivity to secondary reactions. Two mechanisms, FFCM1 and ARAMCO v2, are used for data analysis. The well-selected operating conditions and Monte Carlo sampling data analysis procedure resulted in mechanism-independent reaction rate constant measurements with a 2σ uncertainty of ±35%. The current data disagree with a broadly used theoretical calculation (Knyazev et al. (1996)), but they are in good consensus with one of the review studies (Baulch et al. (2005)), k = (3.9 × 10 22 )T 3.62 exp(-5670/T) cm 3 molecule -1 s -1 . To the best of our knowledge, this work provides the first high-temperature study of the C 2 H 4 + H ⇔ C 2 H 3 + H 2 reaction rate constant with well-defined uncertainty.
UR - https://www.scopus.com/pages/publications/85059885944
U2 - 10.1021/acs.jpca.8b09452
DO - 10.1021/acs.jpca.8b09452
M3 - Article
C2 - 30537818
AN - SCOPUS:85059885944
SN - 1089-5639
VL - 123
SP - 15
EP - 20
JO - Journal of Physical Chemistry A
JF - Journal of Physical Chemistry A
IS - 1
ER -