Catalytic upgrading of bio-tar over a MgNiMo/activated charcoal catalyst under supercritical ethanol conditions

Jin Hyuk Lee, In Gu Lee, Wonjin Jeon, Jong Hyeon Ha, Kwan Young Lee

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Upgrading of bio-tar derived from fast pyrolysis of sawdust was performed over activated charcoal supported nickel-based catalysts (Ni/AC, NiMo/AC, MgNiMo/AC) under supercritical ethanol conditions. The catalytic activities of the catalysts was compared with those of representative bio-oil upgrading catalysts (Ru/AC, HZSM-5). The MgNiMo/AC catalyst exhibited the highest catalytic performance among the catalysts with a decrease of oxygen content in bio-tar from 31.3 wt% up to 10.8 wt% and the yield of liquid product (75 wt%). The effects of reaction temperature (275–350 °C), reaction time (0–120 min) and bio-tar to ethanol ratio (1/9–4/6) were also studied over the MgNiMo/AC catalyst. In addition, reaction of vanillin which is one of major compounds present in bio-tar was carried out under the same bio-tar upgrading conditions in order to understand the production mechanism of phenolic chemicals.

Original languageEnglish
Pages (from-to)237-243
Number of pages7
JournalCatalysis Today
Volume316
DOIs
Publication statusPublished - 2018 Oct 15

Keywords

  • Bio-tar
  • Deoxygenation
  • MgNiMo/AC catalyst
  • Supercritical ethanol

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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