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Kinetic study of the OH + ethylene reaction using frequency‐modulated laser absorption spectroscopy
Author(s) -
Lockhart James P. A.,
Gross Eisen C.,
Sears Trevor J.,
Hall Gregory E.
Publication year - 2019
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.21265
Subject(s) - chemistry , torr , kinetics , kinetic energy , spectroscopy , argon , absorption (acoustics) , chemical kinetics , reaction rate constant , analytical chemistry (journal) , absorption spectroscopy , ethylene , ab initio , laser , reaction rate , ultrafast laser spectroscopy , thermodynamics , catalysis , optics , organic chemistry , physics , quantum mechanics
The pressure dependence of the OH + C 2 H 4 addition reaction has been investigated using frequency‐modulated laser absorption spectroscopy to monitor OH kinetics. Bimolecular rate coefficients for the title reaction are reported in argon bath gas at room temperature and total pressures ranging from 2 to 361 Torr. The pressure‐dependent rate coefficients measured here agree well with the majority of published kinetic studies under similar conditions. Previous high‐level ab initio calculations have identified a prereaction complex on the OH + C 2 H 4 potential energy surface. The influence of this complex on the OH + C 2 H 4 kinetics has been investigated using one‐dimensional master equation analyses of the current and previous experimental measurements.