Carbonization properties of carbonaceous substances oxidized by air blowing-II. Acid-catalyzed modification of oxidized residual oil for better anisotropic development

Isao Mochida, Toshiaki Inaba, Yozo Korai, Kenjiro Takeshita

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Abstract

The catalytic carbonization and modification of oxidized residual oils were studied using AlCl3. Although the catalyst increased the coke yield in the carbonization, the size of the anisotropic units developed in the resultant coke decreased. Modification at proper temperatures was found effective in restoring the potential of the pitch for the anisotropic development of the flow texture. The modified pitch remained essentially quinoline soluble after the above-mentioned modification with only a minor amount of it becoming insoluble. After the modification, some anisotropic units of small diameter were observable in the quinoline soluble phase after separation of the quinoline insoluble phase. These units were recrystallized into smaller numbers of larger units by the gentle evaporation of the solvent quinoline. The significance of the soluble mesophase was discussed.

Original languageEnglish
Pages (from-to)553-558
Number of pages6
JournalCarbon
Volume21
Issue number6
DOIs
Publication statusPublished - 1983

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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