Temperature Dependence of the Rate Coefficient of the Reaction OH + CF3CH2F over the Range 255‐424 K

Gen‐Hou ‐H Leu*, Yuan-Pern Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

The rate coefficient of the reaction of OH with CF3CH2F at six temperatures in the range 255‐424 K was determined by means of the discharge‐flow/resonance‐fluorescence technique. The resonance fluorescence of OH, excited by emission from a gaseous mixture of H2O and He subjected to a microwave discharge, was detected by photon‐counting technique. The reaction was carried out under pseudo‐first‐order conditions with [CF3CH2F] >> [OH]; the rate coefficient was determined to be k = (3.9±0.6) × 10−15 cm3 molecule−1 s−1 at 298 K; the uncertainty represents the 95% confidence limit. The temperature dependence of the rate coefficient is expressed in the Arrhenius form, k(T) = (9.9±1.0) × 10−13 exp [‐(1640±150)/T] cm3 molecule−1 s1.

Original languageEnglish
Pages (from-to)645-649
Number of pages5
JournalJournal of the Chinese Chemical Society
Volume41
Issue number6
DOIs
StatePublished - 1 Jan 1994

Keywords

  • CFCHF
  • HFC‐134a
  • Kinetics
  • Rate coefficient

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