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

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 180degreesC 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.
Publisher
한국공업화학회
Issue Date
2005-01
Language
ENG
Keywords

NICKEL; PRECIPITATION; METHANE; NI

Citation

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.11, no.1, pp.83 - 87

ISSN
1226-086X
URI
http://hdl.handle.net/10203/4789
Appears in Collection
CBE-Journal Papers(저널논문)
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