IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
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
Source PublicationFUEL
Volume119Pages:191-201
Subtype期刊论文
Abstract

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.

KeywordMagmatic Intrusion Coal Structure Raman Spectroscopy Atomic Force Microscopy
DOI10.1016/j.fuel.2013.11.012
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9814
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorLiu, GJ (Liu Guijian)[ 1,2 ]
Affiliation1.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
Recommended Citation
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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