Fuel purpose hydrotreating of sunflower oil on CoMo/Al2O3 catalyst

Márton Krár, Sándor Kovács, Dénes Kalló, Jeno Hancsók

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151 Citations (Scopus)


The importance of the economical production and usage of new generation biofuels, the so-called bio gas oil (paraffins from triglycerides) and the results of the investigation for their productability on the CoMo/Al2O3 catalyst, which was activated by reduction, are presented. The conversion of triglycerides, the yield of total organic fractions and the target product, furthermore the type and ratio of deoxygenation reactions were determined as a function of process parameters. The advantageous process parameters were found (380°C, 40-60bar, 500-600Nm3/m3 H2/sunflower oil ratio, 1.0h-1), where the conversion of triglycerides was 100% and the yield of the target fraction [high paraffin containing (>99%) gas oil boiling range product] was relatively high (73.7-73.9%). The deoxygenation of triglycerides the reduction as well as the decarboxylation/decarbonylation reactions took place. The yield of the target fractions did not achieve the theoretical values (81.4-86.5%). That is why it is necessary to separate the target fraction and recirculate the heavy fraction.

Original languageEnglish
Pages (from-to)9287-9293
Number of pages7
JournalBioresource Technology
Issue number23
Publication statusPublished - Dec 1 2010


  • Bio gas oil
  • Biofuels
  • CoMo/AlO catalyst
  • Hydrotreating
  • Sunflower oil

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal

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