Absolute rate constants for elementary reactions between chlorine atoms and CHFzC1, CH3CFCI:, CHaCFaC1 and CH2FCF3 at 297± 2 K

Kinetics of the gas‐phase reactions of chlorine atoms with CH2F2, CH3CCl3, and CF3CFH2 over the temperature range 253–553 K

“…As seen from Fig. 4, there is excellent agreement between the values of k 3 at ambient temperature reported by Sawerysyn et al [9], Wallington and Hurley [10], Tuazon et al [11], Kaiser [13] (calculated from measured values of k 3 /k(CF 3 CFClH) using the temperature dependent expression for k(CF 3 CFClH) determined by Warren and Ravishankara [19]), Louis et al [12], and the present work. Inspection of observed by Kaiser et al [13] and Louis et al [12] is indistinguishable from that observed in the present work.…”

“…Measurements of k(Cl + CH 3 CCl 3 ) at 280-418 K by Cillien et al [5], Tschuikow-Roux et al [6], Platz et al [7], and Talhaoui et al [8] span a range of approximately 2. Measurements of k(Cl + CF 3 CFH 2 ) at 298 K by Sawerysyn et al [9], Wallington and Hurley [10], Tuazon et al [11], Louis et al [12], and Kaiser [13] are in excellent agreement; however, only limited data are available at temperatures below ambient. To improve our understanding of the kinetics of the reactions of chlorine atoms with halogenated organic compounds, we have measured k(Cl + CH 2 F 2 ) relative to k(Cl + CH 4 ), k(Cl + CH 3 CCl 3 ) relative to k(Cl + CH 2 F 2 ), and k(Cl + CF 3 CFH 2 ) relative to k(Cl + CH 3 CCl 3 ) over the temperature range 253-553 K in 930-1200 mbar of N 2 diluent.…”

Kinetic studies of Cl-atom reactions with selected aromatic compounds using the photochemical reactor-FTIR spectroscopy technique

“…For CHF 2 Cl, the reference rate constant has been measured using absolute rate techniques by Sawerysyn et al [26] and by Jourdain et al [27]. These two studies agree very well, and the rate constant from Sawerysyn et al is used as the reference value in this work.…”

Environmental effects of large igneous province magmatism: a Siberian perspective

“…Cl + CH 3 CF 2 Cl (HCFC-142b). The recommended value for k(298 K) is an average of the results of the relative rate studies of Wallington and Hurley [1404], and Tuazon et al [1326], and the absolute rate studies of Jourdain et al [682] and Talhaoui et al [1279], which is assumed to supercede the earlier study by Sawerysyn et al [1151]. The recommended temperature dependence is a fit to the data of Talhaoui et al The A-factor from that study has been adjusted to fit the recommended room temperature value.…”

“…Cl + CH 2 FCF 3 (HFC-134a). The recommended value for k(298 K) is an average of the results from the relative rate studies of Wallington and Hurley [1404], Tuazon et al [1326], and Kaiser [684] and from the absolute rate study of Louis et al [846], which is assumed to supercede the earlier study by Sawerysyn et al [1151]. [1427] and the relative rate studies of Wallington and Hurley [1404] and Tuazon et al [1326] each recalculated based on the current recommendation for the rate constant of the appropriate reference reaction.…”