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本文利用同步辐射真空紫外光电离质谱技术研究了正丙醇在1.333 kPa和1000～1400 K下的流动反应器热解实验,鉴定了包括自由基、烯醇等活泼物种在内的20余种热解物种,测量了这些热解物种的摩尔分数随热解温度的变化曲线.构建了一个包含142个物种和1149步反应的正丙醇热解反应动力学模型,并利用本文实验结果对模型进行了验证,结果显示本模型对实验结果具有良好的预测性.基于生成速率分析和敏感性分析,揭示了正丙醇分解和关键热解产物生成中的关键路径.并通过与异丙醇低压热解结果的对比,分析了丙醇热解中的燃料同分异构体效应.“,”Flow reactor pyrolysis of n-propanol was studied at 1.333 kPa and 1000～1400 K. Synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS) was used to identify pyrolysis species, including radicals and enols, and measure their mole fraction profiles as a function of pyrolysis temperature. A detailed kinetic model for n-propanol pyrolysis consisting of 142 species and 1149 reactions was developed and validated against the experimental results in this work. Generally, the present model shows a good performance for most of the pyrolysis species. Based on the rate of production analysis and the sensitivity analysis, key pathways of the n-propanol consumption and the formation of major product were revealed. Comparisons between low-pressure pyrolysis of n-propanol and iso-propanol were also made to analyze the fuel isomeric effect in propanol decomposition.