Distribution of functional groups in anthracite coal and their real-time changes during low-temperature oxidation

作者：Qi, Xuyao^*; Wang, Deming; Su, Baohua; Xue, Haibo; Jin, Liuyi; Xin, Haihui; Zhong, Xiaoxing

来源：Research Journal of Chemistry and Environment, 2013, 17: 104-112.

• Anthracite
• In-situ FTIR
• Real-time change
• Coal oxidation
• Low temperature

In order to further understand the microreaction during the process of coal self-heating, the distribution of functional groups in an anthracite coal sample and their real-time changes were analyzed. The experiments were carried out using an in-situ FTIR method. The results indicate that the quantity of aliphatic hydrocarbon groups increase with the rise of coal temperature during the oxidation process. The oxygen-containing groups have two different kinds of changing trends during the low-temperature oxidation of Kabuliang anthracite. The quantity of -OH groups decreases at the beginning of oxidation process and then increase with the rise of coal temperature. The quantities of -COOH, C=O, -COO- and C-O groups increase with the rise of coal temperature. These changing phenomena were analyzed from the differences in chemical activities and reaction probability of various functional groups.

• 出版日期2013-9
• 单位中国矿业大学（北京）