Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
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Acidic Properties and Catalytic Activity of Titanium Sulfate Supported on TiO2

  • Sohn, Jong-Rack (Department of Applied Chemistry, Engineering College, Kyungpook National University) ;
  • Lee, Si-Hoon (Environment Research Team, Research Institute of Industrial Science and Technology) ;
  • Cheon, Park-Won (Department of Applied Chemistry, Engineering College, Kyungpook National University) ;
  • Kim, Hea-Won (Department of Industrial Chemistry, Kyung Il University)
  • Published : 2004.05.20
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Abstract

Titanium sulfate supported on $TiO_2$was prepared by impregnation of powdered $TiO_2$with an aqueous solution of titanium sulfate followed by calcining in air at high temperature. For Ti$(SO_4)_2/TiO_2$ samples calcined at 300 $^{\circ}C$, no diffraction lines of titanium sulfate are observed at $Ti(SO_4)_2$loading up to 30 wt%, indicating good dispersion of $Ti(SO_4)_2$ on the surface of $TiO_2$. The acidity of the catalysts increased in proportion to the titanium sulfate content up to 20 wt% of $Ti(SO_4)_2$. 20 wt% $Ti(SO_4)_2/TiO_2$ calcined at 300 $^{\circ}C$ 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 ammonia chemisorption method.

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References

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