Friedel-Craft’s Acylation of Deactivated Benzenes over Solid Acid Catalysts
Journal Title: GJRA-Global Journal For Research Analysis - Year 2015, Vol 4, Issue 3
Abstract
The cobalt manganese ferrospinels with the general formula CoxMn(1-x)Fe2O4(x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 has been successfully synthesized by controlled low temperature hydroxide co-precipitation method. The cobalt manganese ferrospinels exhibit a well defined crystalline structure with high surface area. The physicochemical properties of the ferrospinels are characterized by X-ray diffraction, Inductively coupled plasma analysis and surface area determination by BET method. The stoichiometry of the samples was in good agreement with the theoretical values. The surface acidity of the systems was determined by NH3- TPD method. The addition of cobalt ions into the pure manganese ferrospinels enhances the acidity in the weak and medium regions. These ferrospinel systems were found to be active for the liquid phase Friedel-Craft’s acylation of deactivated benzenes with benzoyl chloride giving corresponding ketones. Acidity of the catalysts in the weak and medium regions is mainly responsible for the good catalytic performance
Authors and Affiliations
Nishamol Kanat, Chandana Basu
Keywords
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