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低中煤级煤结构演化的XRD表征

李霞 曾凡桂 王威 董夔

李霞, 曾凡桂, 王威, 董夔. 低中煤级煤结构演化的XRD表征[J]. 燃料化学学报, 2016, 44(7): 777-783.
引用本文: 李霞, 曾凡桂, 王威, 董夔. 低中煤级煤结构演化的XRD表征[J]. 燃料化学学报, 2016, 44(7): 777-783.
LI Xia, ZENG Fan-gui, WANG Wei, DONG Kui. XRD characterization of structural evolution in low-middle rank coals[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 777-783.
Citation: LI Xia, ZENG Fan-gui, WANG Wei, DONG Kui. XRD characterization of structural evolution in low-middle rank coals[J]. Journal of Fuel Chemistry and Technology, 2016, 44(7): 777-783.

低中煤级煤结构演化的XRD表征

基金项目: 

国家自然科学基金 41302127

NSFC-山西煤基低碳联合基金 U1510102

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: TQ531

XRD characterization of structural evolution in low-middle rank coals

Funds: 

The project was supported by National Natural Science Foundation of China 41302127

the Joint Funds of the Coal Based and Low Carbon of Shanxi U1510102

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

More Information
  • 摘要: 通过对28个最大镜质组反射率0.30%-2.05%镜煤样品的X射线衍射(XRD) 分析, 获得XRD结构参数, 得到这些参数随反射率增大呈现的阶段性规律。在镜质组反射率小于1.0%阶段, LaLc急剧增加, d002迅速减小, 含氧官能团的脱落和脂肪长度支链化程度减小占主导; 在1.0%-1.6%阶段, La持续增加, d002先增加后减小, Lc先减小然后趋于平稳, 芳香体系脱氢和调整空间位阻同时进行; 在1.6%-2.0%阶段, d002持续减小, LcLa的增大, 煤结构演化以芳构化为主。XRD结构参数演化与第一、二次煤化作用跃变关系密切。
  • 图  1  样品的X-射线衍射谱图

    Figure  1  XRD spectra of coal samples

    图  2  DP-4的002分峰拟合谱图

    Figure  2  Curve-fitting 002 spectrum of DP-4

    图  3  RoLcd002 (a) 和La (b) 的关系

    Figure  3  Relation of Lc, d002 (a) and La (b) with Ro

    图  4  LaLcd002的关系

    Figure  4  Relation of Lc and d002 with La

    表  1  样品的化学和光学参数

    Table  1  Chemical and optical parameters for studied samples

    Sample Proximate analysis w/% Ro/% Ultimate analysis wdaf/%
    Mad Aad Vdaf C H O* N S
    YM-16 14.22 4.27 45.17 0.30 75.01 3.84 19.63 1.21 0.31
    DYS 18.99 10.89 58.03 0.37 68.74 3.76 25.61 1.48 0.57
    WMC 5.14 16.15 42.12 0.46 77.79 4.47 16.02 1.13 0.43
    DP-4 1.50 14.27 40.35 0.57 77.89 4.39 13.51 1.16 2.86
    YJ-9 2.59 8.97 30.91 0.68 82.10 4.43 9.94 1.24 2.19
    LN-2 0.73 3.65 38.12 0.70 83.46 4.08 10.47 1.23 0.73
    TB-10 0.45 5.15 39.30 0.84 83.50 4.45 8.09 1.21 2.69
    HPD-11 0.78 10.72 36.28 0.87 81.22 4.31 12.5 1.19 0.66
    JJZ-2 0.75 22.33 37.09 0.94 81.23 4.71 12.09 0.95 0.75
    ZW-5 0.79 16.11 36.27 0.95 78.69 4.49 13.02 1.08 2.53
    CC-2 0.59 8.56 34.46 0.99 81.51 4.28 12.44 1.13 0.54
    XZ-10 0.53 15.39 27.21 1.02 86.76 4.01 7.59 1.02 0.44
    JJZ-5 0.48 18.86 27.98 1.07 82.83 4.57 9.21 0.95 2.22
    LYZ-2 0.56 5.02 28.11 1.07 86.35 4.01 7.95 1.10 0.53
    CC-10 0.68 10.31 29.15 1.16 84.86 4.09 9.20 1.15 0.70
    LYK-8 0.49 10.91 23.62 1.17 86.64 4.03 6.64 1.15 1.41
    ML-8 0.48 9.00 27.96 1.21 86.32 4.04 6.76 1.11 1.66
    ML-2 0.45 7.90 28.11 1.24 85.46 4.02 7.59 1.10 1.75
    LL-4 0.49 6.21 26.29 1.29 83.46 4.03 10.75 1.09 0.60
    LL-3 1.00 4.60 25.49 1.29 88.18 3.99 6.11 1.15 0.52
    TL-2 0.39 6.70 24.01 1.45 87.17 3.94 7.07 1.10 0.65
    TL-8 0.45 7.46 21.36 1.47 86.09 3.91 6.12 1.08 2.71
    XM-2 0.61 9.52 17.25 1.72 89.80 3.88 4.58 1.05 0.58
    DEP-2 0.62 8.56 17.04 1.74 90.13 4.56 3.32 1.44 0.46
    XM-3 0.70 8.18 15.18 1.84 90.43 3.73 3.95 1.08 0.72
    XM-8 0.96 6.52 15.13 1.84 88.10 3.83 4.76 1.12 2.13
    DEP-3 0.53 14.36 16.67 2.00 89.50 3.94 4.37 1.03 1.00
    DEP-8 0.57 2.37 12.22 2.05 88.41 3.49 5.22 1.15 1.70
    * : by difference
    下载: 导出CSV

    表  2  XRD结构参数

    Table  2  XRD structural parameters for studied samples

    Sample Ro/% d002/nm Lc/nm La/ nm N(layers)
    YM 0.30 0.393 5 0.983 4 0.937 7 3.50
    DYS 0.37 0.392 8 1.063 6 0.903 3 3.71
    WMC 0.46 0.392 8 1.149 7 1.025 3 3.93
    DP-4 0.57 0.373 2 1.238 6 1.011 9 4.32
    YJ-9 0.68 0.376 8 1.433 9 1.009 5 4.81
    LN-2 0.70 0.370 1 1.570 5 1.014 5 5.24
    TB-10 0.84 0.354 2 1.582 1 1.158 6 5.47
    HPD-11 0.87 0.358 6 1.624 5 1.157 0 5.53
    JJZ-2 0.94 0.357 4 1.685 9 1.137 0 5.72
    ZW-5 0.95 0.356 7 1.653 4 1.145 5 5.64
    CC-2 0.99 0.352 3 1.646 7 1.191 1 5.67
    XZ-10 1.02 0.350 3 1.725 7 1.224 5 5.93
    JJZ-5 1.07 0.355 4 1.733 8 1.279 7 5.88
    LYZ-2 1.07 0.349 6 1.813 7 1.305 0 6.19
    CC-10 1.16 0.353 9 1.794 4 1.323 9 6.07
    LYK-8 1.17 0.352 1 1.755 8 1.319 6 5.99
    ML-8 1.21 0.354 6 1.749 1 1.232 4 5.93
    ML-2 1.24 0.363 1.695 8 1.250 6 5.67
    LL-4 1.29 0.356 7 1.738 6 1.304 1 5.87
    LL-3 1.29 0.357 4 1.744 6 1.374 1 5.88
    TL-2 1.45 0.352 3 1.712 2 1.375 3 5.86
    TL-8 1.47 0.354 1 1.761 9 1.317 5 5.98
    XM-2 1.72 0.353 1 1.998 4 1.361 4 6.66
    DEP-2 1.74 0.347 6 1.918 4 1.420 7 6.52
    XM-3 1.84 0.349 5 1.952 1 1.419 1 6.59
    XM-8 1.84 0.347 3 1.941 2 1.515 5 6.59
    DEP-3 2.00 0.349 5 1.931 8 1.527 0 6.53
    DEP-8 2.05 0.344 6 2.132 9 1.579 0 7.19
    note: N=Lc/d002+1
    下载: 导出CSV
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  • 收稿日期:  2016-01-21
  • 修回日期:  2016-03-16
  • 网络出版日期:  2021-01-23
  • 刊出日期:  2016-07-10

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