The relative rate constants of reactions of oxygen atoms with several olefins in liquid carbon dioxide.

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概要

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• The relative rate constants of reactions of oxygen atoms with several olefins and 2-methylpropane have been determined in liquid carbon dioxide at −18 °C, using the γ-radiolysis of carbon dioxide in the presence of these hydrocarbons. They are : 1-butene, 1.0; <I>cis</I>-2-butene, 2.3; <I>trans</I>-2-butene, 3.0; 2-methylpropene, 2.9; 2,3-dimethyl-2-butene, 2.0; 2-methylpropane, 0.07. These relative values are very different from those obtained in the gas phase. A possible reason is discussed and a simple theoretical treatment is proposed for the competition between diffusion and reaction on the basis of the idea of a "collision set" in the liquid phase. The reaction of oxygen atoms with paraffin in liquid carbon dioxide seems to be faster than that in the gas phase. The reason is not clear at present.

• 公益社団法人 日本化学会の論文

著者

• Sato Shin

  Department Of Chemistry School Of Science The University Of Tokyo

• Karasawa Hidetoshi

  Department of Applied Physics, Tokyo Institute of Technology

• Yugeta Rei

  Department of Applied Physics, Tokyo Institute of Technology

• Sasamoto Tai

  Department of Applied Physics, Tokyo Institute of Technology

• Sato Shin

  Department of Applied Physics, Tokyo Institute of Technology

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