When coal and crude oil are associated, the immersion of crude oil affects the microstructure changes in coal oxidation process. In this work, thermogravimetric and in situ infrared spectroscopy experiments were used to study the oxidation characteristics and active functional groups evolution of oil-immersed coal. Results showed that the crude oil in coal slows down the oxidation process of coal and considerably affects weight gain phase due to O absorption. Considering crude oil O consumption and O attack on the active group methylene, the change law of methylene (2923 cm⁻¹) with temperature can be used to represent the evolution of Aliphatic Functional Groups when the oil content is less than 10%. The characteristic demarcation point of the evolution rule of the active groups of coal with different oil ratios is 270 °C. The aromatic C = C of raw coal and 25% oil content coal samples satisfied the quadratic curve change relationship.

当煤与原油结合时，原油的浸入会影响煤氧化过程中的微观结构变化。在这项工作中，热重和原位红外光谱实验被用来研究油浸煤的氧化特性和活性官能团的演化。结果表明，煤中的原油减缓了煤的氧化过程，并显着影响了由于 O 吸收而导致的增重阶段。考虑原油 O 消耗和 O 对活性基团亚甲基的攻击，亚甲基 (2923 cm ^-1) 与温度的关系可以用来表示含油量小于 10% 时脂肪族官能团的演变。不同油比煤活性基团演化规律的特征分界点为270℃。原煤和含油量25%煤样的芳烃C=C满足二次曲线变化关系。