Atmospheric chemistry of cis-CF3CHCHF: Kinetics of reactions with OH radicals and O3 and products of OH radical initiated oxidation

Research output: Contribution to journalArticle

Abstract

Long path length FTIR-smog chamber techniques were used to measure k(OH + cis-CF3CHCHF) = (1.20 ± 0.14) × 10−12 and k(O3 + cis-CF3CHCHF) = (1.65 ± 0.16) × 10−21 cm3 molecule −1 s−1 in 700 Torr of N2/O2 diluent at 296 K. The OH initiated oxidation of cis-CF3CHCHF gives CF3CHO and HCOF in molar yields which are indistinguishable from 100%. The atmospheric lifetime of cis-CF3CHCHF is determined by its reaction with OH and is approximately 10 days. cis-CF3CHCHF has an integrated IR absorption cross section (600–2000 cm−1) of (1.71 ± 0.09) × 10−16 cm molecule−1 and a global warming potential of approximately 3 (100 year time horizon). Quoted uncertainties reflect two standard deviations from least squares regression analyses.

Details

Authors
External organisations
  • University of Copenhagen
  • Ford Motor
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Biochemicals
Original languageEnglish
Pages (from-to)233-237
JournalChemical Physics Letters
Volume473
Issue number4-6
Publication statusPublished - 2009 May 1
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes