正构烷烃是石油的主要组成之一,关于其生成动力学的研究对于探索石油的生成机理具有重要的意义.然而由于干酪根生烃的复杂性以及缺乏有效的技术手段,目前这方面的资料仍十分缺乏.为克服上述局限性,美国Cheveron石油公司近年来研制开发了多冷阱热解气相色谱仪,笔者利用该仪器研究了由煤生成的正构烷烃的生成活化能并探讨了其地球化学意义. The n-alkanes are one of the major constituents of petroleum, and the research on their formation kinetics is of great significance for exploring the formation mechanism of petroleum. However, because of the complexity of kerogen generation and the lack of effective technical means, In order to overcome these limitations, the United States Cheveron Oil Company in recent years developed a multi-cold trap pyrolysis gas chromatograph, the author used the instrument to study the activation energy generated by the formation of n-alkanes and explore the Earth Chemical significance.