Effect of magnesium promoter on nickel/kieselguhr catalysts in triglyceride oil hydrogenation

Jong Ki Jeon, Seung Tae Koh, Young Kwon Park, Dong Jin Suh, Son Ki Ihm

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The effects of a magnesium promoter on the catalytic properties of kieselguhr-supported nickel catalysts were examined through a triglyceride oil hydrogenation reaction. The catalysts were characterized with respect to their BET surface area, pore size distribution, hydrogen chemisorption, temperature-programmed reduction (TPR), and X-ray diffraction (XRD). The reactions were performed at 180°C and 45 psi. By adding a small amount of magnesium to a kieselguhr-supported nickel catalyst, the BET surface area increases as a result of an increase in microporosity. With the addition of magnesium, the catalysts were more difficult to reduce, but presented a higher metallic area. In the hydrogenation of triglyceride oil, the 4 wt% magnesium-promoted catalyst showed the highest activity, which appeared to be due to an increase of the metallic area, as well as maintaining mesoporosity to avoid limited diffusion.

Original languageEnglish
Pages (from-to)83-87
Number of pages5
JournalJournal of Industrial and Engineering Chemistry
Issue number1
StatePublished - Jan 2005


  • Kieselguhr
  • Magnesium
  • Nickel
  • Promoter effect
  • Triglyceride oil hydrogenation


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