||Thermal Decomposition of Peroxyacetyl Nitrate and Reactions of Acetyl Peroxy Radicals with NO and NO2 Over the Temperature Range 283-313 K.
Tuazon, E. C. ;
Carter, W. P. L. ;
Atkinson., R. ;
||California Univ., Riverside. Statewide Air Pollution Research Center.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Peroxy esters ;
Reaction kinetics ;
Free radicals ;
Air pollution ;
Temperature dependence ;
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The thermal decomposition of peroxyacetyl nitrate (PAN) in NO-NO2-air (or N2) mixtures has been studied at 740 torr total pressure over the temperature range 283-313 K. The experimental data obtained yield a rate constant k3 for the thermal decomposition of PAN of k3 = 2.52 x 10(16) exponent (-13573/T) per sec and a rate constant ratio for the reactions of the CH3C(O)00(dot) radical with NO2 (k1) and NO (k2) of k2/k1 = 1.95 + or - 0.28, independent of temperature over the range 283-313 K. These data are compared and discussed with other literature data. (Copyright (c) 1991 American Chemical Society.)