Liquid Phase Benzylation of Toluene over Modified Titania Catalysts
DOI:
https://doi.org/10.12723/mjs.21.3Keywords:
Alkylation, Friedel-Crafts reaction, Sol-gel method, Titania, iron loaded sulfated titaniaAbstract
Titania, sulfated titania and a series of iron loaded sulfated titania catalyst with different iron loadings (39 %) are prepared by sol-gel method and calcined at 500°C. Anatase is found to be the active phase with crystallite size in the nano range. All the prepared catalysts are found to be stable up to 700°C. Acidity is measured using spectrophotometric monitoring of adsorption of perylene, thermogravimetric desorption of 2,6-dimethylpyridine and temperature programmed desorption of ammonia. The activities of the catalysts were tested for liquid phase Friedel-Crafts benzylation of toluene with benzyl chloride. It has been concluded that Lewis acid sites are responsible for the reaction.
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