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Issue
Korean Journal of Chemical Engineering,
Vol.20, No.6, 1030-1036, 2003
Characterization of Zirconium Sulfate Supported on TiO2 and Activity for Acid Catalysis
Sohn JR, Lee DG
A series of Zr(SO4)2/TiO2 catalysts were prepared by impregnation of powder TiO2 with an aqueous solution of zirconium sulfate. No diffraction line of zirconium sulfate was observed up to 30 wt%, indicating good dispersion of Zr(SO4)2 on the surface of TiO2. The high catalytic activities of Zr(SO4)2/TiO2 for both 2-propanol dehydration and cumene dealkylation were related to the increase of acidity and acid strength due to the addition of Zr(SO4)2. Zr(SO4)2/TiO2 containing 25% zirconium sulfate and calcined at 400 ℃ exhibited maximum catalytic activities for 2-propanol dehydration and cumene dealkylation. The catalytic activities for these reactions were correlated with the acidity of catalysts measured by the ammonia chemisorption method.
Keywords: Zr(SO4)2/TiO2 Catalyst; Characterization; Acid Catalysis; 2-Propanol Dehydration; Cumene Dealkylation
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