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http://dx.doi.org/10.5012/bkcs.2007.28.10.1763

Effect of Al2O3 Addition and WO3 Modification on Catalytic Activity of NiO/Al2O3-TiO2/WO3 for Ethylene Dimerization  

Pae, Young-Il (Department of Chemistry, University of Ulsan)
Sohn, Jong-Rack (Department of Applied Chemistry, Engineering College, Kyungpook National University)
Publication Information
Bulletin of the Korean Chemical Society / v.28, no.10, 2007 , pp. 1763-1770 More about this Journal
Abstract
Strong solid acid catalysts, NiO/Al2O3-TiO2/WO3 for ethylene dimerization were prepared by the addition of Al2O3 and the modification with WO3. The acid sites and acid strength were increased by the inductive effect of WO3 species bonded to the surface of catalysts. The larger the dispersed WO3 amount, the higher both the acidity and catalytic activity for ethylene dimerization. The addition of Al2O3 to TiO2 up to 5 mol% enhanced acidity and catalytic activity gradually due to the interaction between Al2O3 and TiO2 and consequent formation of Al-O-Ti bond.
Keywords
$Al_2O_3$ addition; $WO_3$ modification; Acidity; Ethylene dimerization;
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