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利用差热分析并采用微分和积分相结合的方法，通过分析显微组分富集样在低加热速度下热解的实验结果，对显微组分的热解机理进行了研究。结果表明，煤的热解过程十分复杂，整个热解过程不能用一步反应描述，但存在明确分界温度Ｔｍ。在假定两步反应的前提下研究表明，各步反应均由扩散过程控制，但扩散机理不同，不同段的活化能不一样，后段的活化能比前段小。不同显微组分的热解机理没有表现出差别，但活化能却有差别，惰质组一般具有最低的活化能。变质程度对活化能存在影响，随变质程度加深，活化能增大。
By differential thermal analysis and differential and integral methods, the pyrolysis mechanism of the micro-components was studied by analyzing the experimental results of the pyrolysis of the micro-component-rich sample at low heating rate. The results show that coal pyrolysis process is very complicated. The whole pyrolysis process can not be described by one-step reaction, but there is a definite demarcation temperature Tm. Under the assumption of two-step reaction, the research shows that the reaction is controlled by the diffusion process, but the diffusion mechanism is different. The activation energy of different sections is different, and the activation energy of the latter section is smaller than the previous one. The pyrolysis mechanism of the different microstructures showed no difference, but the activation energy was different, and the inertinite generally had the lowest activation energy. The degree of metamorphism has an impact on the activation energy, and as the degree of metamorphism deepens, the activation energy increases.