低阶煤的傅里叶红外光谱实验分析  

Experimental analysis of Fourier transforminfrared spectroscopy of low rank coal

作　　者：郑云婷 Zheng Yunting(Tiandi(Tangshan)Mining Technology Co.,Ltd.,Tangshan Hebei 063012,China;Coal Preparation Engineering and Technology Research Center of Hebei Province,Tangshan Hebei 063012,China)

机构地区：[1]天地(唐山)矿业科技有限公司,河北唐山063012 [2]河北省煤炭洗选工程技术研究中心,河北唐山063012

出　　处：《煤化工》2023年第5期66-70,共5页Coal Chemical Industry

摘　　要：为探明低阶煤分子结构和主要官能团变化的特殊性和规律性,对三种煤样进行傅里叶变换红外光谱(FTIR)技术实验。利用FTIR技术和分峰拟合技术,通过定性和半定量研究,结合子峰面积拟合,对比分析了三种煤样的化学结构参数。结果表明:三种煤样的红外光谱图构架相似,吸收峰的位置和强度有所不同;随着煤变质程度的提高,煤样中脂肪和芳香结构吸收带的吸收峰强度总和变高,其中脂肪结构吸收带的吸收峰强度变低,而芳香结构吸收带的吸收峰强度变高,含氧官能团吸收带和羟基吸收带的吸收峰强度变低。In order to explore the particularity and regularity of the molecular structure and the changes of main functional groups of low rank coal,Fourier transform infrared spectroscopy(FTIR)experiments were carried out on three coal samples.Their chemical structure parameters were compared and analyzed by using FTIR and peak fitting technology,through the qualitative and semi-quantitative research,combined with sub-peak area fitting.The experimental results showed that the infrared spectra of the three coal samples were similar,and the positions and intensities of the absorption peaks were different.With the increase of coal metamorphism,the total absorption peak intensity of fat and aromatic structure absorption bands in coal samples became higher,in which the absorption peak intensity of fat structure absorption band became lower,while that of aromatic structure absorption band became higher,the intensity of the absorption peak of oxygen-containing functional group absorption band and hydroxyl absorption band became lower.

关 键 词：低阶煤 傅里叶变换红外光谱(FTIR) 表面性质 分峰拟合 官能团 

分 类 号：TQ533.6[化学工程—煤化学工程]