Atmospheric chemistry of CF₃C(O)O₂ radicals. Kinetics of their reaction with NO₂ and kinetics of the thermal decomposition of the product CF₃C(O)O₂NO₂

TY - JOUR

T1 - Atmospheric chemistry of CF3C(O)O2 radicals. Kinetics of their reaction with NO2 and kinetics of the thermal decomposition of the product CF3C(O)O2NO2

AU - Wallington, Timothy J.

AU - Sehested, Jens

AU - Nielsen, Ole J.

PY - 1994/8/26

Y1 - 1994/8/26

N2 - A pulse radiolysis technique has been used to measure a rate constant of (6.6±1.3) x 10-12 cm3 molecule-1 s-1 for the association reaction between CF3C(O)O2 radicals and NO2 at 295 K and one atmosphere total pressure of SF6 diluent. A FTIR/smog chamber system was used to study the thermal decomposition CF3C(O)O2NO2. The rate of decomposition of CF3C(O)O2NO2 was independent of the total pressure of N2 diluent over the range 100-700 Torr and was fit by the expression k-1=(1.9-1.5 +7.6)x1016 exp[(-14000±480)/T] s-1. Implications for the atmospheric chemistry of CFC replacements are discussed.

AB - A pulse radiolysis technique has been used to measure a rate constant of (6.6±1.3) x 10-12 cm3 molecule-1 s-1 for the association reaction between CF3C(O)O2 radicals and NO2 at 295 K and one atmosphere total pressure of SF6 diluent. A FTIR/smog chamber system was used to study the thermal decomposition CF3C(O)O2NO2. The rate of decomposition of CF3C(O)O2NO2 was independent of the total pressure of N2 diluent over the range 100-700 Torr and was fit by the expression k-1=(1.9-1.5 +7.6)x1016 exp[(-14000±480)/T] s-1. Implications for the atmospheric chemistry of CFC replacements are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0001579645&partnerID=8YFLogxK

U2 - 10.1016/0009-2614(94)00751-9

DO - 10.1016/0009-2614(94)00751-9

M3 - Journal article

AN - SCOPUS:0001579645

SN - 0009-2614

VL - 226

SP - 563

EP - 569

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 5-6

ER -