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不同变质程度煤的高分辨率透射电镜分析

李霞 曾凡桂 司加康 王威 董夔 程丽媛

李霞, 曾凡桂, 司加康, 王威, 董夔, 程丽媛. 不同变质程度煤的高分辨率透射电镜分析[J]. 燃料化学学报, 2016, 44(3): 279-286.
引用本文: 李霞, 曾凡桂, 司加康, 王威, 董夔, 程丽媛. 不同变质程度煤的高分辨率透射电镜分析[J]. 燃料化学学报, 2016, 44(3): 279-286.
LI Xia, ZENG Fan-gui, SI Jia-kang, WANG Wei, DONG Kui, CHENG Li-yuan. High resolution TEM image analysis of coals with different metamorphic degrees[J]. Journal of Fuel Chemistry and Technology, 2016, 44(3): 279-286.
Citation: LI Xia, ZENG Fan-gui, SI Jia-kang, WANG Wei, DONG Kui, CHENG Li-yuan. High resolution TEM image analysis of coals with different metamorphic degrees[J]. Journal of Fuel Chemistry and Technology, 2016, 44(3): 279-286.

不同变质程度煤的高分辨率透射电镜分析

基金项目: 

国家自然科学基金 41302127

国家自然科学基金 41402137

山西省煤基重点科技攻关项目 MQ2014-01

详细信息
    通讯作者:

    曾凡桂, Tel: 0351-6010468, E-mail: zengfangui@tyut.edu.cn

  • 中图分类号: TQ533

High resolution TEM image analysis of coals with different metamorphic degrees

Funds: 

National Natural Science Foundation of China 41302127

National Natural Science Foundation of China 41402137

Shanxi Province Coal Based Key Scientific and Technological Projects MQ2014-01

  • 摘要: 利用高分辨率透射电子显微镜(HRTEM) 分析了三种不同变质程度煤样的结构特征.基于傅里叶-反傅里叶变换方法, 并结合Matlab、Arcgis和AutoCAD软件, 通过图像分析技术, 获得了HRTEM照片的晶格条纹参数.结果表明, 三种煤样的晶格条纹呈现不同特征, 按条纹长度分别归属于1×1-8×8共计八个类型.以3×3为临界点, 在1×1和2×2中, ML-8中芳香层片的比例高于DP-4和XM-3;在3×3-8×8中, ML-8中芳香层片的比例低于DP-4和XM-3.对比HRTEM和XRD参数d002发现, 随着镜质组反射率的增加d002都呈现递减趋势.
  • 图  1  煤样(DP-4) 的图像解析流程

    Figure  1.  Diagram of image processing on lattice image of coal (DP-4)

    图  2  二值化图像的晶格边缘画线提取

    Figure  2.  Line drawing extraction of lattice fringe of binarization image

    图  3  煤样的XRD谱图

    Figure  3.  XRD spectra of coal samples

    图  4  煤样的晶格条纹特征

    Figure  4.  Characteristics of fringe-extracted of coal

    (a1)、(b1)、(c1): criginal HRTEM images; (a2)、(b2)、(c2): line drawing extraction of lattice fringe; (a3)、(b3)、(c3): the lattice fringe length distribution

    图  5  三个煤样芳香层片的比例分布

    Figure  5.  Distribution of the proportions of aromatic layer in 3 coal samples

    图  6  三个煤样XRD和HRTEM的d002对比图

    Figure  6.  d002 comparison of the XRD and HRTEM for 3 coal samples

    表  1  样品的化学和光学参数

    Table  1.   Chemical and optical parameters for studied samples

    Samples no.Coal mineProximate analysis w/%Ro, max /%Ultimate analysis wdaf/%
    MadAadVdafCHO*NS
    DP-4Dongpo1.5014.2740.350.57377.894.3913.511.162.86
    ML-8Malan0.489.0027.961.20586.324.046.761.111.66
    XM-3Ximing0.708.1815.181.83890.433.733.951.080.72
    *: by difference
    下载: 导出CSV

    表  2  煤样的微晶结构参数

    Table  2.   Microcrystalline structure parameters of coal

    Sampled002 /nmLc/nmLa /nm
    DP-40.373 21.238 61.011 9
    ML-80.354 61.749 11.232 4
    XM-30.349 51.952 11.419 1
    下载: 导出CSV

    表  3  高分辨透射电子显微镜晶格条纹归属分类[11]

    Table  3.   Classification of HRTEM lattice fringes

    Aromatic sheetMean d/nmGrouping d/nm
    1×10.390.30-0.54
    2×20.600.55-0.74
    3×30.930.75-1.14
    4×41.271.15-1.44
    5×51.601.45-1.74
    6×61.941.75-2.04
    7×72.282.05-2.44
    8×82.612.45-2.84
    下载: 导出CSV
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出版历程
  • 收稿日期:  2015-10-21
  • 修回日期:  2015-12-29
  • 网络出版日期:  2021-01-23
  • 刊出日期:  2016-03-30

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