Effect of Bromotrifluoromethane on the Ignition in Methane and Ethane-Oxygen-Argon Mixtures behind Shock Waves.

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概要

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• The ignition delay times behind shock waves in CH<SUB>4</SUB>–, and C<SUB>2</SUB>H<SUB>6</SUB>–O<SUB>2</SUB>–Ar systems containing CF<SUB>3</SUB>Br were measured for a range of temperatures between 1400 and 2100 K and pressures between 1.5 and 3.5×10<SUP>5</SUP> Pa. These measurements indicated that CF<SUB>3</SUB>Br promotes the ignition of CH<SUB>4</SUB> but inhibits the ignition of C<SUB>2</SUB>H<SUB>6</SUB>. Although the inhibition effect for C<SUB>2</SUB>H<SUB>6</SUB> increases with increasing CF<SUB>3</SUB>Br concentration and decreasing temperature, the promotion effect in CH<SUB>4</SUB> was independent of both the CF<SUB>3</SUB>Br concentration and the temperature in this experiment. We calculated the induction times for conditions similar to the experiments using a model which included 49 elementary reactions related to CF<SUB>3</SUB>Br. Calculations using this model gave induction times that were in good agreement with the experiments. The calculated values, however, depended on several effective reactions among the 49 reactions.

• 公益社団法人 日本化学会の論文

著者

• Inomata Tadaaki

  Department of Chemistry, Faculty of Science and Technology, Sophia University

• Moriwaki Takao

  Department of Chemistry, Faculty of Science and Technology, Sophia University

• Suzuki Akimichi

  Department of Chemistry, Faculty of Science and Technology, Sophia University

• Jinno Hiroshi

  Department of Chemistry, Faculty of Science and Technology, Sophia University

• Jinno Hiroshi

  Department of Chemistry, Faculty of Science and Engineering

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• The addition effects of methyl halides on ethane ignition behind reflected shock waves.
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