中文摘要：

为研究气体解吸、常温氧化和高温氧化3种不同处置方式下CO生成煤表面化学结构的变化特征,采用傅里叶变换红外FTIR）光谱仪,对3种不同变质程度煤样在氮气环境解吸72 h、25℃氧化72 h和100℃氧化10 h 3种处置方式前后固体颗粒试样的表面微化学结构及官能团进行检测,结果表明：在非氧化CO产生过程未发生化学反应,常温空气条件下低变质煤样和空气中的氧发生反应,脂肪烃含量降低,部分含氧官能团增加,1 379-1 373 cm（-1）甲基谱峰变化较大,高变质无烟煤变化不明显,在100℃空气条件下低变质褐煤反应最明显,无烟煤反应程度低,主要为脂肪烃含量降低,苯类结构吸收峰稍有增强,研究凸显出了煤的表面活性基团在未进入燃烧阶段前氧化过程中的中介特征。

英文摘要：

In order to study the changes of surface chemical structure of coal in three different CO production methods, including gas desorption, room temperature oxidation and high temperature oxidation, Fourier transform infrared spectrometer（FTIR） was used to detect the three different ranks of coal samples in nitrogen atmosphere for 72 h, oxidation condition at 25 ℃ for 72 h and100 ℃ for 10 h. The results show that there is no chemical reaction in the process of non-oxidizing CO production. Under normal t emperature and air condition, the low rank coal sample reacts with the oxygen in the air, and the surface functional group changes slightly, mainly decreases the content of aliphatic hydrocarbons, increases the oxygen-containing functional group at 1 379 cm-1to1 373 cm-1, and the change of high-metamorphic anthracite is not obvious. Under the air condition of 100 ℃, the reaction of lowmetamorphic lignite is the most obvious and it is mainly due to the decrease of aliphatic hydrocarbons content and the difference of absorption peaks of benzene structure. The study highlights the intermediate characteristics of surface active groups of coal in the oxidation process before entering the combustion stage.