Kinetic Study on the Oxidation of 2, 4-Dimethylpentane

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  • NIKI Etsuo
    Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo
  • TAKAISHI Yohichi
    Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo
  • KAMIYA Yoshio
    Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo

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Other Title
  • 2,4-ジメチルペンタンの自動酸化反応における動力学の検討
  • ２，４‐ジメチルペンタンの自動酸化反応における動力学の検討

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Description

The kinetics of the oxidation of 2, 4Tdimethylpentane, a model compound of polypropylene, were studied at 70° C with azobisisobutyronitrile as an initiator. The kinetic order of the rate of oxidation on the substrate concentration was 0.76. This low kinetic dependence was interpreted by the contribution of intramolecular propagation. The ratio of the rate constants of intramolecular propagation to intermolecular propagation was estimated as about 100, which was in reasonable agreement with the literature value determined by product analyses. The kinetic order increased in the presence of added t-butyl hydroperoxide. It was suggested that kinetic study may be useful in elucidating the importance of intramolecular propagation in the oxidation of polypropylene, where the product analysis is quite difficult.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1975 (9), 1559-1563, 1975-09-10

    The Chemical Society of Japan

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