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首页> 外文期刊>Energy & fuels >Homogeneous Catalysis of Liquid-Phase Hydroperoxide Decomposition in Hydrocarbons
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Homogeneous Catalysis of Liquid-Phase Hydroperoxide Decomposition in Hydrocarbons

机译：烃中液相过氧化氢的均相催化

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摘要

The autoxidation of jet fuel takes place via a complex free radical reaction mechanism that involves the decomposition of hydroperoxides.The liquid-phase, unimolecular decomposition of hydroperoxide has been isolated for experimental study. Three hydroperoxides relevant to jet fuel autoxidation, including cumene hydroperoxide (CHP), dodecane hydroperoxide (DHP), and ethylbenzene hydroperoxide (EBHP), were thermally decomposed separately and found to closely fit first-order behavior with respect to hydroperoxide concentration. The activation energy for liquid-phase thermolysis of these hydroperoxides was found to be significantly less than typical gas-phase values. Parameters affecting the rate of hydroperoxide decomposition, such as dissolved metal content, organic acids, and metal deactivator additive (MDA) were explored. Metal type was shown to be a significant factor affecting hydroperoxide decomposition rate, while naphthenic acids (NA) were shown to have little effect on the rate. However, when dissolved metal and NA were added together a strong synergistic effect on hydroperoxide decomposition rate was noted. The increases in decomposition rate due to dissolved metal and/or acid were effectively inhibited by treatment with MDA.
机译：喷气燃料的自氧化是通过涉及氢过氧化物分解的复杂的自由基反应机理发生的。已分离出液相，氢的过分子单分子分解用于实验研究。与喷气燃料自氧化有关的三种氢过氧化物，包括枯烯氢过氧化物（CHP），十二烷氢过氧化物（DHP）和乙苯氢过氧化物（EBHP），分别进行热分解，发现与氢过氧化物浓度密切相关的一阶行为。发现这些氢过氧化物的液相热解活化能明显小于典型的气相值。探索了影响氢过氧化物分解速率的参数，例如溶解的金属含量，有机酸和金属减活剂添加剂（MDA）。金属类型是影响氢过氧化物分解速率的重要因素，而环烷酸（NA）对该速率的影响很小。但是，当将溶解的金属和NA一起添加时，对氢过氧化物的分解速率具有很强的协同作用。用MDA处理可有效抑制由于溶解的金属和/或酸引起的分解速率的增加。

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  • 来源
    《Energy & fuels》 |2011年第maraaapra期|p.897-904|共8页
  • 作者

    Zachary J. West; Ryan K. Adams; Steven Zabarnick;

  • 作者单位

    University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0043, United States;

    University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0043, United States;

    University of Dayton Research Institute, 300 College Park, Dayton, Ohio 45469-0043, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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