Influences of magmatic intrusion on the macromolecular and pore structures of coal: Evidences from Raman spectroscopy and atomic force microscopy
Wu, D (Wu Dun)[ 1,2 ]; Liu, GJ (Liu Guijian)[ 1,2 ]; Sun, RY (Sun Ruoyu)[ 1 ]; Chen, SC (Chen Shancheng)[ 1 ]
2014-03-01
发表期刊FUEL
卷号119页码:191-201
文章类型期刊论文
摘要

Magmatic intrusion into coal-bearing sequences can significantly affect the rank of the intruded coal and change the macromolecular and pore structures. Here, we use Raman microscope and Atomic force microscope (AFM) to obtain quantitative information on these transformations. Six coal samples of different ranks taken from a magmatic intrusion zone of Huainan Coalfield, China, were studied. The Raman spectra were fitted with a combination of 8 Lorentzian bands and 1 Gaussian band. We found that the macromolecular structures in coals of different ranks have significant relationships with Raman spectral parameters, particularly the band area ratios (I-D1/I-G, I-D2/I-G, I-D3/I-G, I-D4/I-G and I-G/I-All). With the increase of coal rank, I-D1/I-G, I-D2/I-G, I-D3/I-G and I-D4/I-G show trends of decreasing intensity, suggesting an enhanced orientation of aromatic hydrocarbons. Observations by Atomic force microscopy indicate that the pore parameters (e. g. amount, size, shape) are quite different for different ranks of coals. The pore size of low-rank bituminous coal is much larger than high-rank anthracite and pore abundance is higher in the former. In addition, there is also good correspondence between the surface topography of coal grains and coal rank.

关键词Magmatic Intrusion Coal Structure Raman Spectroscopy Atomic Force Microscopy
DOI10.1016/j.fuel.2013.11.012
收录类别SCI ; EI
语种英语
引用统计
被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9814
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, GJ (Liu Guijian)[ 1,2 ]
作者单位1.CAS Key Laboratory of Crust-Mantle Materials and Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, The Chinese Academy of Sciences, Xi’an, Shaanxi 710075, China
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GB/T 7714
Wu, D ,Liu, GJ ,Sun, RY ,et al. Influences of magmatic intrusion on the macromolecular and pore structures of coal: Evidences from Raman spectroscopy and atomic force microscopy[J]. FUEL,2014,119:191-201.
APA Wu, D ,Liu, GJ ,Sun, RY ,&Chen, SC .(2014).Influences of magmatic intrusion on the macromolecular and pore structures of coal: Evidences from Raman spectroscopy and atomic force microscopy.FUEL,119,191-201.
MLA Wu, D ,et al."Influences of magmatic intrusion on the macromolecular and pore structures of coal: Evidences from Raman spectroscopy and atomic force microscopy".FUEL 119(2014):191-201.
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