Production of chemicals by cracking pyrolytic tar from Loy Yang coal over iron oxide catalysts in a steam atmosphere

Nozomu Sonoyama, Kazunari Nobuta, Tokuji Kimura, Sou Hosokai, Jun Ichiro Hayashi, Teruoki Tago, Takao Masuda

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

Iron oxide catalysts containing metal promoters were tested to evaluate whether they could be applied to the coal tar obtained from the pyrolysis of Loy Yang coal. Catalytic cracking of the coal tar in a steam atmosphere was conducted in a fixed-bed reactor at 773 K and ambient atmospheric pressure. For iron oxide catalysts containing cerium, zirconium, and aluminium, the total yield of monocyclic aromatic hydrocarbons, phenols, and ketones exceeded 40 mol-C% on a tar basis, while about 97 wt.% of the initial heavy tar was decomposed. The combination of cerium, zirconium, and aluminium improved the activity of the iron oxide catalyst. Moreover, the addition of steam to the tar vapour increased the yield of ketones and made the catalyst more durable.

Original languageEnglish
Pages (from-to)771-775
Number of pages5
JournalFuel Processing Technology
Volume92
Issue number4
DOIs
Publication statusPublished - Apr 2011

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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