煤的红外光谱研究

来源期刊：中南大学学报(自然科学版)1999年第4期

论文作者：刘国根 邱冠周 胡岳华

文章页码：44 - 46

关键词：煤;红外光谱;风化作用;腐植酸

Key words：coal; IR spectra; efflorescence reaction; humic acid

摘    要：利用740型傅里叶变换红外 (FTIR)光谱仪系统地研究了褐煤与风化烟煤的红外光谱．结果表明：含碳量在一个较宽的范围内煤的红外光谱图相类似，从褐煤到烟煤，随着煤化作用的加 强，脂肪族C—H伸缩振动峰逐渐减弱，褐煤中存在大量原生腐植酸，烟煤中则含有大量再生腐植酸，这将为判断烟煤是否风化提出又一判据．根据煤的红外光谱还 可推测其所含腐植酸种类及含量．

Abstract: In this paper, the infrared(IR) spectra from 4 000 to 400 cm^-1 for brown and bituminou coal have been systematically studied by means of 740 model FTIR spectrometer. A similar basic skeleton for coals over a wide range of carbon content is indicated by the general similarity of the spectra. Due to the strengthening of coalification, the aliphatic C―H stretching absorption bands of bituminous coal is weaker than that of brown coal. The brown coal contains a large amount of primary humic acid. The bituminous coal contains a large amount of regenerative humic acid, which will offer a standard for judging whether the coal was efflorescend. Humic acid type and content can be deduced by infrared spectra of coals.