Potential of hydrocarbons for photochemical conversion of NO to NO2.

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概要

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• The factor <I>F</I>, the number of NO molecules which are converted photochemically into NO<SUB>2</SUB> when one hydrocarbon molecule is consumed, was determined for fourteen different hydrocarbons in the photochemical oxidation process. Experiments were carried out in a 67 dm<SUP>3</SUP> Pyrex reaction chamber in which a mixture of hydrocarbon, NO, H<SUB>2</SUB>O, and air was irradiated by a xenon short arc lamp. In the range from low to middle conversion, hydrocarbons and NO decayed nearly exponentially, NO being converted into NO<SUB>2</SUB>. The observed value of <I>F</I> was approximately two for most of the hydrocarbons studied. The value is in line with the long chain mechanism involving OH radicals predicted by Heicklen <I>et al.</I> Only <I>m</I>-xylene gave a larger <I>F</I> value. Reaction sequences of the long chain mechanism caused by OH radicals were discussed, a generalized kinetic model for the chain mechanism being proposed. This will be useful for the atmospheric modeling of photochemical smog.

• 公益社団法人 日本化学会の論文

著者

• Inoue Gen

  The National Institute For Environmental Studies

• AKIMOTO Hajime

  The National Institute for Environmental Studies

• Washida Nobuaki

  The National Institute for Environmental Studies

• Okuda Michio

  The National Institute for Environmental Studies

関連論文

• MEASUREMENT OF CARBON MONOXIDE AT SYOWA STATION
• Potential of hydrocarbons for photochemical conversion of NO to NO2.
• Is O2*(a1.DELTA.g) formed in the O+O3,H+O3,and NO+O3 reactions?
• Reaction mechanism of the photooxidation of the toluene-NO2-O2-N2 system in the gas phase.

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