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中温沥青族组成分析及其对中间相沥青结构的影响

丁卜席 钟梅 马凤云

丁卜席, 钟梅, 马凤云. 中温沥青族组成分析及其对中间相沥青结构的影响[J]. 燃料化学学报(中英文), 2022, 50(7): 920-926. doi: 10.19906/j.cnki.JFCT.2022004
引用本文: 丁卜席, 钟梅, 马凤云. 中温沥青族组成分析及其对中间相沥青结构的影响[J]. 燃料化学学报(中英文), 2022, 50(7): 920-926. doi: 10.19906/j.cnki.JFCT.2022004
DING Bu-xi, ZHONG Mei, MA Feng-yun. Analysis of medium temperature coal tar pitch group composition and its effect on the structure of mesophase pitch[J]. Journal of Fuel Chemistry and Technology, 2022, 50(7): 920-926. doi: 10.19906/j.cnki.JFCT.2022004
Citation: DING Bu-xi, ZHONG Mei, MA Feng-yun. Analysis of medium temperature coal tar pitch group composition and its effect on the structure of mesophase pitch[J]. Journal of Fuel Chemistry and Technology, 2022, 50(7): 920-926. doi: 10.19906/j.cnki.JFCT.2022004

中温沥青族组成分析及其对中间相沥青结构的影响

doi: 10.19906/j.cnki.JFCT.2022004
基金项目: 国家自然科学基金(21766035),新疆维吾尔自治区杰出青年基金(2020Q001),上海合作组织科技伙伴计划及国际科技合作计划(2020E01018)和新疆维吾尔自治区重点实验室开放项目(2018D04008)资助
详细信息
    作者简介:

    丁卜席(1995-),男,山东济宁,在读硕士。Tel: 15999130579, E-mail: 1240103033@qq.com

    通讯作者:

    E-mail: zhongmei0504@126.com

    ma_fy@126.com

  • 中图分类号: TQ533;TQ536

Analysis of medium temperature coal tar pitch group composition and its effect on the structure of mesophase pitch

Funds: The project was supported by the National Nature Science Foundation of China (21766035), Xinjiang Uygur Autonomous Region Outstanding Youth Fund (2020Q001), Shanghai Cooperation Organization Science and Technology Partnership Program and International Science and Technology Cooperation Program (2020E01018), Xinjiang Uygur Autonomous Region Key Laboratory Open Project (2018D04008).
  • 摘要: 以甲苯-吡啶、正庚烷-四氢呋喃为溶剂,采用索氏抽提分离中温沥青(ZCTP)的族组分并解析其组成与结构。结果表明,与ZCTP相比,甲苯不溶-吡啶可溶物(TI-PS)和正庚烷不溶-四氢呋喃可溶物(HI-THFS)的热稳定性更高,残炭率增至56.95%和47.63%,失重量分别减小41.51%和28.85%;此外,TI-PS和HI-THFS的C=C含量分别比ZCTP高6.69%和3.26%,为75.57%和73.14%,吡啶氮含量分别提升约16和8个百分点。以TI-PS和HI-THFS为原料分别制得中间相沥青M-TI-PS和M-HI-THFS。其中,M-HI-THFS以中小区域型为主,并伴有部分细镶嵌结构,光学各向异性含量较低;M-TI-PS光学各向异性含量约为80%,且形成了广域型光学织构;然而ZCTP难以形成稳定的区域型光学织构,只能形成马赛克型光学织构。
  • FIG. 1691.  FIG. 1691.

    FIG. 1691.  FIG. 1691.

    图  1  煤沥青族组分分离示意图

    Figure  1  Schematic diagram of group components separation of coal pitch

    图  2  沥青的TG-DTG曲线

    Figure  2  TG-DTG curves of pitch

    图  3  沥青组分的XPS谱图

    Figure  3  XPS spectra of pitch samples

    图  4  沥青样品的红外光谱及各官能团的相对含量

    Figure  4  Infrared spectra of pitch samples and relative content of each functional group

    图  5  共炭化合成中间相沥青的偏光显微镜照片

    Figure  5  Photographs of polarizing microscopy of co-carbonated mesophase pitches (a): M-HI-THFS; (b): M-TI-PS; (c): M-ZCTP

    表  1  沥青的工业分析与元素分析

    Table  1  Element and proximate analyses of three kinds of pitches

    Sampleproximate analysis ${w_{ {\rm{ad} } }/{\% } }$ultimate analysis $ w/{\% }$H/CO/C
    MVFC*ACHO*NS
    ZCTP1.0074.7523.420.8383.589.185.561.560.121.320.059
    TI-PS0.9548.6949.870.4985.616.924.353.070.150.970.038
    HI-THFS0.9354.7243.730.6284.248.364.952.320.131.190.044
    *: by difference, ad: air-dried basis M: moisture, V: volatile, FC: fixed carbon, A: ash
    下载: 导出CSV

    表  2  沥青组分中C、O和N的赋存形式及相对含量

    Table  2  Forms and relative contents of C, O and N in pitch

    TypeAssignmentBinding energy /eVRelative content/ %
    ZCTPTI-PSHI-THFS
    C 1sC = C284.370.8375.5773.14
    C−C285.222.9318.4820.85
    C−O286.26.245.956.01
    O 1sC = O531.213.9011.3512.16
    C−O532.364.8460.3262.68
    COO−533.421.2628.8322.16
    N 1sN-6398.947.5563.6155.16
    N-5400.052.4536.3944.84
    下载: 导出CSV
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  • 收稿日期:  2021-11-29
  • 修回日期:  2021-12-26
  • 录用日期:  2022-01-11
  • 网络出版日期:  2022-01-22
  • 刊出日期:  2022-08-01

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