中文摘要：

煤自燃倾向性与变质程度密切相关,研究不同煤阶煤氧化过程中活性基团及其变化特征,对揭示和表征煤自燃倾向性有十分重要的意义。文中采用傅里叶红外光谱仪（FTIR）,通过红外光谱分析实验,对比研究不同变质程度煤样在不同温度条件下煤中主要活性基团的变化特征,根据煤低温氧化过程中活性基团的动态变化特征,得出了煤分子中含氧活性结构含量随煤变质程度的升高不断减少,表明了煤分子中活性结构的种类、数量及活性直接影响煤氧化自燃的能力,揭示了煤低温氧化升温过程微观结构变化与煤自燃性之间的内在关系。研究表明不同煤阶煤微观本质的不同,导致其自燃倾向特性的不同。研究结果对煤自燃过程的定量分析、预测和阻化的研究有一定的指导意义。

英文摘要：

The tendency of spontaneous combustion of coal is closely related to the degree of metamorphism. It is very important to study the active groups and their characteristics in the oxidation process of different coals,and to reveal and characterize the tendency of spontaneous combustion of coal. In this paper,through the FTIR,we compared and studied the change characteristics of the main active groups of coal samples under different temperature conditions. According to the dynamic characteristics of the active groups during low-temperature oxidation process,the oxygen-bearing active structures decrease as the increase of the coal metamorphism degree. This phenomenon indicates that the type,amount,and activity of the active structure directly influence the capacity of coal spontaneous combustion. Accordingly,the internal relation between the propensity of coal spontaneous combustion and the variation of microstructure is revealed. This study shows that the different propensities of coal spontaneous combustion are result of their different microstructures. Results of this study have significant meanings for quantitative analysis,prevention,and inhibition of coal spontaneous combustion.