Atmospheric chemistry of CxF2x+1CH=CH2 (x=1, 2, 4, 6 and 8): Radiative efficiencies and global warming potentials

作者：Andersen Mads P Sulbaek^*; Waterland Robert L; Sander Stanley P; Nielsen Ole J; Wallington Timothy J

来源：Journal of Photochemistry and Photobiology A: Chemistry , 2012, 233: 50-52.

DOI：10.1016/j.jphotochem.2012.02.020

• Atmospheric chemistry
• Fluoro alkenes
• Olefins
• Global warming potentials

IR spectra for CxF2x+1CH=CH2 (x=1, 2, 4, 6, 8) were recorded in 700Torr of air, 298 +/- 2 K. Integrated absorption cross sections (650-1800 cm(-1)) of (1.18 +/- 0.06), (1.32 +/- 0.07), (2.43 +/- 0.12). (2.86 +/- 0.14) and (3.32 +/- 0.17) x 10(-16) cm(2) molecule(-1) cm(-1) were determined for CxF2x+1CH=CH2 (x = 1, 2, 4, 6, 8), respectively. Radiative efficiencies of 0.159, 0.176, 0.338, 0.376, and 0.418 W m(-2) ppb(-1) were calculated for CxF2x+1CH=CH2 (x = 1, 2, 4, 6, 8), respectively. The title compounds have short atmospheric lifetimes (approximately 7-8 days) and 100-year global warming potentials of <= 2. CxF2x+1CH=CH2 (x = 1, 2, 4, 6, 8) will not contribute significantly to radiative forcing of climate change.

• 出版日期2012-4-1