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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 28, Number 8
BKCSDE 28(8)
August 20, 2007

Title	Characterization of NiSO₄ Supported on Fe₂O₃ and Catalytic Properties for Ethylene Dimerization
Author	Young Il Pae, Jong Rack Sohn*
Keywords	NiSO₄/Fe₂O₃ catalyst, Phase transition of Fe₂O₃, Acidic properties, Ethylene dimerization
Abstract	The NiSO₄ supported on Fe₂O₃ catalysts were prepared by the impregnation method. No diffraction line of nickel sulfate was observed up to 30 wt %, indicating good dispersion of nickel sulfate on the surface of Fe₂O₃. The addition of nickel sulfate to Fe₂O₃ shifted the phase transition of Fe₂O₃ (from amorphous to hematite) to higher temperatures because of the interaction between nickel sulfate and Fe₂O₃. 20-NiSO₄/Fe₂O₃ containing 20 wt % of NiSO₄ and calcined at 500 oC exhibited a maximum catalytic activity for ethylene dimerization. The initial product of ethylene dimerization was found to be 1-butene and the initially produced 1-butene was also isomerized to 2-butene during the reaction. The catalytic activities were correlated with the acidity of catalysts measured by the ammonia chemisorption method.
Page	1273 - 1279
Full Text	PDF

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