Benzylation of benzene and toluene with benzylchloride over clay-based acid catalysts


Durap F., Akçay M., Yurdakoç K.

Asian Journal of Chemistry, vol.18, no.3, pp.1803-1807, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 3
  • Publication Date: 2006
  • Journal Name: Asian Journal of Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1803-1807
  • Keywords: Friedel-Crafts alkylation, bentonite, pillared clays, surface acidity, ADSORPTION, PYRIDINE
  • Dokuz Eylül University Affiliated: Yes

Abstract

The pillared clay catalysts were calcined after in corporation of metal polycation ions with exchangeable cations and water. Friedel-Crafts alkylations of aromatic hydrocarbons were carried out in the presence of clay catalysts originating from bentonite. In these reactions, it has been found that pillared clays have excellent catalytic activity. It was found that iron pillared clay (Fe-PILC) was the more efficient catalyst producing quantitative conversion with greatly reduced amounts of catalysts in short reaction period. Their efficiency is attributed to the higher Fe3+, Cr3+ and Al 3+ contents in the catalysts and pillaring effect. The clays have both Bronsted and Lewis acidities which were determined by pyridine adsorption-desorption and in situ FTIR technique.