C115 RATES FOR REACTIONS OF C_2H_5O and i-C_3H_7O with NO and CH_2OH with O_2(Spray/laminar flame)

概要

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Laser-induced fluorescence (LIF) spectra of the C_2H_5O and i-C_3H_7O were obtained in the mixtures of C_2H_5I/O_2/NO and i-C_3H_7I/O_2/NO respectively and the rate constants for the reaction of C_2H_5O and i-C_3H_7O with NO were examined at room temperature. Through monitoring temporal profiles of C_2H_5O and i-C_3H_7O by LIF, it was clearly shown that the alkoxy radicals were produced by the reaction of alkyl peroxides with NO and consumed by the reactions of the alkoxy radicals with NO. The rate constants for C_2H_5O_2+NO → C_2H_5O+NO_2 (1), i-C_3H_7O_2+NO → i-C_3H_7O+NO_2 (2), C_2H_5O+NO → Products (3) and i-C_3H_7O+NO → Products (4) were determined as k_1 = (7.72±0.75)×10^<-12>, k_2 = (7.33±0.38)×10^<-12>, k_3 = (1.91±0.20)×10^<-11> and k_4= (2.79±0.28)×10^<-11> respectively ,all in units of cm^3molecule^<-1>s^<-1>. These values are in good agreement with previous studies. In addition, the rate constant for the reaction of CH_2OH with O_2 was also determined by monitoring CH_2O built-up: 1.29×10^<-12> cm^3molecule^<-1>s^<-1>.
一般社団法人日本機械学会の論文
2000-10-01