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Kinetics of C2H Radical Reactions With Ethene, Propene, and 1-Butene Measured in a Pulsed Laval Nozzle Apparatus at T = 103 K and 296 K

Published

Author(s)

A B. Vakhtin, Dwayne E. Heard, I W. Smith, S R. Leone

Abstract

Low-temperature kinetics of the reactions of C2H radical with ethene (k1) propene (k2), and 1-butane (kd3^) are studied using a pulsed Laval nozzle supersonic expansion. The C2H decay profiles in the presence of both the alkene reactant and O2 are monitored by the CH(A2δ)chemiluminescence tracer method. The rate constants k1, k2, and k3 are measured at T=103 K to be (1.4 0.4) x 10-10, (2.4 0.6) x 10-10, and (2.6 0.6) x 10-10, and (2.6 0.6 x 10-10 cm3 molecule -1s-1, respectively. Measurements at room temperature (296K) and previous data suggest a slight negative temperature dependence for all three reactions.
Citation
Chemical Physics Letters
Volume
348
Issue
No. 1-2

Keywords

C<sub>2</sub>H ethynyl radical, Laval supersonic expansion, low-temperature kinetics

Citation

Vakhtin, A. , Heard, D. , Smith, I. and Leone, S. (2001), Kinetics of C<sub>2</sub>H Radical Reactions With Ethene, Propene, and 1-Butene Measured in a Pulsed Laval Nozzle Apparatus at T = 103 K and 296 K, Chemical Physics Letters (Accessed May 26, 2024)

Issues

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Created October 31, 2001, Updated October 12, 2021