Catalytic Hydrotreating for Nitrogen Removal from Coal Tar Pitch in Supercritical Fluid

Tadafumi Adschiri, Kouichi Nakada, Satoshi Ogasawara, Kunio Arai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Specific features of solid catalyzed reaction in supercritical fluid were discussed through the comparison of denitrogenation of coal tar pitch by using NiMo-Al2O3 catalyst in supercritical fluid (toluene/tetralin mixture) and in liquid (1-methyl naphthalene/tetralin mixture). Basic nitrogen compounds reacted faster than neutral nitrogen compounds on the solid-acid-catalyst in both cases. At 703 K and 15 MPa, and in the range of particle sizes from 0.11 to 0.85 mm where denitrogenation proceeded under chemical reaction control, the reaction rate in supercritical fluid was higher than that in the liquid.

Original languageEnglish
Pages (from-to)965-970
Number of pages6
Journalkagaku kogaku ronbunshu
Volume20
Issue number6
DOIs
Publication statusPublished - 1994

Keywords

  • Catalyst
  • Chemical Reaction
  • Coal Tar Pitch
  • Denitrogenation
  • Energy
  • Fluid
  • High Pressure
  • Supercritical

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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