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Carbonization behavior of coal tar pitch modified with benzoquinone

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Abstract

A soluble fraction of coal tar pitch (CP) in tetrahydrofuran (THF) was reacted with p-benzoquinone (BQ) at 160 and 180°C and followed by carbonization and graphitization. The reaction and carbonization behavior were monitored in-situ by using differential scanning calorimeter, high-temperature 1H NMR and high-temperature ESR. The reactions of CP and BQ resulted in an increase in molecular weight with an increase in BQ concentration. Such molecular weight increases led to the formation of a less ordered structure due to the reduced mobility of the molecules. The relative order of the carbonized materials was determined by using polarized light microscope and X-ray diffraction. The molecular size of the precursor was recognized as an important factor in determining the morphology of carbon materials.

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Authors and Affiliations

  1. Department of Textile Engineering, Chonnam National University, Yongbong-dong 300, Buk-ku, Kwangju, 500-757, South Korea

    K. S. Yang

  2. Department of Textile Engineering, Chonnam National University, Yongbong-dong 300, Buk-ku, Kwangju, 500-757, South Korea

    D. J. Lee

  3. Korea Institute of Energy Research, Yusong-Ku, Daejion, 305-600, South Korea

    K. H. An

  4. Research Institute of Industrial Science & Technology, P. O. Box 135, Pohang, 790-600, South Korea

    J. H. Choi

  5. Center for Advanced Research of Energy Technology, Hokkaido University, N-13 W8, Kita-ku, Sapporo, 060, Japan

    H. Kumagai & Y. Sanada

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  1. K. S. Yang
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  2. D. J. Lee
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  3. K. H. An
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  4. J. H. Choi
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  5. H. Kumagai
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  6. Y. Sanada
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Yang, K.S., Lee, D.J., An, K.H. et al. Carbonization behavior of coal tar pitch modified with benzoquinone. Journal of Materials Science 35, 2087–2092 (2000). https://doi.org/10.1023/A:1004759612122

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