Advertisement

Journal of Materials Science

, Volume 26, Issue 4, pp 1039–1044 | Cite as

Mesophase formation and chemical changes in petroleum pitch during low-temperature heat soaking

  • Y. -S. Lim
  • B. I. Lee
Papers

Abstract

A-240 petroleum pitch was used to study the mesophase formation. The mesophase formation of solvent and solvent-acid extracted pitch were controlled in terms of optical texture by adding aromatic hydrocarbon compounds as nucleating agents. It is possible to improve considerably the coking properties that are enhanced by the ring condensation tendency of the precursor. The mesophase yield of the HF-solvent extracted pitches in the presence of 1% anthracene was increased when compared with HF-solvent extracted pitch in the absence of anthracene. In this case, HF acted as a catalyst along with anthracene for ring condensation, similar to AlCl3 in the aromatic hydrocarbons.

Keywords

Polymer Petroleum Hydrocarbon Chemical Change Aromatic Hydrocarbon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Y. D. Park, I. Mochida andT. Matsumoto,Carbon 26 (1988) 375.CrossRefGoogle Scholar
  2. 2.
    I. Mochida, K. Shimizu, Y. Korai, H. Otsuka andS. Fujiyama,ibid. 26 (1988) 843.CrossRefGoogle Scholar
  3. 3.
    Y. S. Lim andB. I. Lee,ibid. 27 (1989) 739.CrossRefGoogle Scholar
  4. 4.
    M. Inagaki, T. Nagoshi andM. Washiyama, in “Proceeding of an International Conference on Carbon Research, German Ceramic Society” (1986) p. 46.Google Scholar
  5. 5.
    I. Mochida, K. Shimizu, Y. Korai, S. Fujiyama andH. Otsuka, in “Proceeding of an International Conference on Carbon”, University of Newcastle upon Tyne, UK (1988) p. 259.Google Scholar
  6. 6.
    I. Mochida, H. Toshima, Y. Korai andT. Matsumoto,J. Mater. Sci. 23 (1988) 670.CrossRefGoogle Scholar
  7. 7.
    J. M. Guet andD. Tchoubor,Carbon 23 (1985) 273.CrossRefGoogle Scholar
  8. 8.
    A. Obelin,ibid. 22 (1984) 521.CrossRefGoogle Scholar
  9. 9.
    R. Diefendorf andD. M. Riggs, USA Pat. 4 208 267 (1980).Google Scholar
  10. 10.
    J. L. White, “The formation of microstructure in graphitizable materials”, “Progress in solid state chemistry”, Vol. 9, edited by J. O. McCaldin and G. Somorjai (Pergamon, New York, 1975) p.59.Google Scholar
  11. 11.
    M. Nakamizo andK. Tamai,Carbon 22 (1984) 193.CrossRefGoogle Scholar
  12. 12.
    M. Akezuma, K. Okuzuwa, K. Esumi, K. Meguro andH. Honda,ibid. 25 (1987) 517.CrossRefGoogle Scholar
  13. 13.
    S. Otani,ibid. 5 (1967) 219.CrossRefGoogle Scholar
  14. 14.
    Fitzer, K. Mueller andW. Schaefer, “The chemistry of the pyrolytic conversion of organic compounds to carbon”, in “Chemistry and Physics of Carbon”, Vol. 7, edited by P. L. Walker Jr. (Marcel Dekker, New York, 1971) p. 237.Google Scholar
  15. 15.
    S. Eser andR. J. Jenkins, in “Proceedings of an International Conference on Carbon”, edited by B. McEnaney and T. J. Mays, University of Newcastle upon Tyne, UK (1988), p. 407.Google Scholar

Copyright information

© Chapman and Hall Ltd 1991

Authors and Affiliations

  • Y. -S. Lim
    • 1
  • B. I. Lee
    • 1
  1. 1.Center for Engineering Fibers and Their Composites, Department of Ceramic EngineeringClemson UniversityClemsonUSA

Personalised recommendations