Abstract
Abstract P-methyl acetephenone synthesis from toluene and acetic anhydride over HPW(H 3 PW 12 O 40 )/TiO 2 was carefully studied, and catalysts were characterized by BET, XRD and NH 3 -TPD. The characterized results displayed that the interaction between HPW and TiO 2 prevented the loss of acidic protons from HPW to form the weak Lewis acid sites over HPW/TiO 2 . The weak acid sites over HPW/TiO 2 came into being in case of much more HPW being loaded onto TiO 2 or HPW/TiO 2 being calcined at high temperature. The reaction results suggest that p-methyl acetephenone yield and selectivity depended on the acidity of catalysts, and the appearance of weak Lewis acid sites over HPW/TiO 2 resulted in p-methyl acetephenone yield decline.
Published Version
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