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Atmospheric chemistry of HFC-134a. Kinetic and mechanistic study of the CF3CFHO2+NO2 reaction

✍ Scribed by Trine E. Møgelberg; Ole J. Nielsen; Jens Sehested; Timothy J. Wallington; Michael D. Hurley; William F. Schneider

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
534 KB
Volume
225
Category
Article
ISSN
0009-2614

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✦ Synopsis

A pulse radiolysis system was used to study the kinetics of the reaction of CF&FH02 with NOz. By monitoring the rate of the decay of NO* using its absorption at 400 nm the reaction rate constant was determined to be k= (5.OkO.S) x 10-r' cm3 molecule-' s-'. A long path length Fourier-transform infrared technique was used to investigate the thermal decomposition of the product CF3CFH02N02. At 296 K in the presence of 700 Tot-r of air, decomposition of CF3CFH02N02 was rapid (greater than 90% decomposition within 3 min). The results are discussed in the context of atmospheric chemistry of CF3CFH2 (HFC-134a).

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