Preparation of nitrogen-rich pitches from diazanaphthalenes using AlCl3

I. Mochida, K. H. An, K. Sakanishi, Y. Korai

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Nitrogen enriched pitches prepared catalytically from diazanaphthalenes (quinoxaline (QX), quinazoline (QZ), and phthalazine (PT)) by the aid of AlCl3 were studied from the viewpoints of the structure and properties of the pitches and their coke due to the different nitrogen locations of starting substrates. The different position of nitrogen in the substrates much influenced the remaining nitrogen content and optical feature of the pitch and the elimination of nitrogen, graphitizability and basicity of the resultant coke. The nitrogen atoms located at a position in QX and QZ almost remained in the resultant pitches during preparation; however, its elimination rate was faster than that at the β position during the carbonization. QX which has two α-nitrogens provided 55 vol.% of anisotropic content in the resultant, yielding the graphitic coke, which showed low basicity. The cokes from QXP and PTP which have one and two β-nitrogens exhibited perfectly isotropic texture and significant basicity measured in water. Nitrogen at the position in the coke is concluded to show a higher basicity by ten times than that at the α position.

Original languageEnglish
Pages (from-to)601-608
Number of pages8
JournalCarbon
Volume34
Issue number5
DOIs
Publication statusPublished - 1996

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Fingerprint

Dive into the research topics of 'Preparation of nitrogen-rich pitches from diazanaphthalenes using AlCl<sub>3</sub>'. Together they form a unique fingerprint.

Cite this