Journal of Colloid and Interface Science 2007-07-01

Amino benzoic acid modified silica--an improved catalyst for the mono-substituted product in the benzylation of toluene with benzyl chloride.

Farook Adam, Jeyashelly Andas

Index: J. Colloid. Interface Sci. 311(1) , 135-43, (2007)

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Abstract

Iron and 4-(methylamino)benzoic acid have been successfully incorporated into silica extracted from rice husk. The silica/Fe/amine complex, RH-Fe(5% amine), showed a ca. 24% increase in specific surface area compared to RH-Fe. This increase was attributed to the templated formation of regular pores. The XRD showed the RH-Fe(5% amine) to be amorphous. The Friedel-Crafts benzylation reaction with toluene using RH-Fe(5% amine) showed a drastic reduction in the di-substituted products to ca. 1.0%.