烟煤的拉曼光谱分析  

Raman Spectroscopic Analysis of Bituminous Coal

作　　者：高飞[1] 邓汉忠[2] 王雪峰[1] 戴凤威[1] 武司苑 

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [2]辽宁工程技术大学材料科学与工程学院,辽宁阜新123000

出　　处：《分析科学学报》2016年第3期377-380,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.51174108;51274112)

摘　　要：为了分析煤的化学结构及性质,本文对大同塔山矿的煤样进行拉曼光谱测试。结果表明:在拉曼光谱一级模内存在两个明显的振动峰,分别为1 367cm^(-1)的D峰与1 593cm^(-1)的G峰,通过峰强度比(I_D/I_G=0.72)和半峰宽等信息可以确定出样品中芳香层排列有序化程度较高,侧链及杂原子含量较低。除此之外,在拉曼光谱中还发现方解石、白云石、金红石、锐钛矿、磁铁矿等无机矿物质的特征峰。对煤样进行X-射线衍射(XRD)和X-射线荧光光谱(XRF)测试,在XRD光谱中发现了金红石、锐钛矿及磁铁矿的衍射峰,在XRF测试中发现Al、Si、P、S、Ca、Ti、Fe、Sr等元素类型,证实了上述矿物质的存在。Raman spectroscopy was used to analyze the chemical structure and properties of coal from Tashan mine sample,and the result indicated that two distinct bands（D band and G band）existed in the first order of Raman spectra.The informations of peak intensity ratio（I_D/I_G=0.72）and FWHM indicated that the aromatic layers in the sample arranged in a high degree of ordering and the content of side chains and heteroatoms was very low.In addition,the characteristic peaks of minerals such as calcite,rutile,anatase,magnetite and pyrite were found in Raman spectroscopy.In order to confirm the presence of these minerals,the X-ray diffraction（XRD）spectra and X-ray fluorescence（XRF）spectra of coal samples were tested,and the characteristic peaks of rutile and anatase were found in the XRD spectrum,and Al,Si,P,S,Ca,Ti,Fe and Sr elements were found in XRF testing.

关 键 词：煤 矿物质 拉曼光谱 X-谢线衍射 X-射线荧光光谱 

分 类 号：O657.37[理学—分析化学]