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The studies on the Friedel–Crafts acylation of toluene with acetic anhydride over HPW/TiO2
- Source :
-
Fuel Processing Technology . Oct2011, Vol. 92 Issue 10, p2011-2015. 5p. - Publication Year :
- 2011
-
Abstract
- Abstract: P-methyl acetephenone synthesis from toluene and acetic anhydride over HPW(H3PW12O40)/TiO2 was carefully studied, and catalysts were characterized by BET, XRD and NH3-TPD. The characterized results displayed that the interaction between HPW and TiO2 prevented the loss of acidic protons from HPW to form the weak Lewis acid sites over HPW/TiO2. The weak acid sites over HPW/TiO2 came into being in case of much more HPW being loaded onto TiO2 or HPW/TiO2 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/TiO2 resulted in p-methyl acetephenone yield decline. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03783820
- Volume :
- 92
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Fuel Processing Technology
- Publication Type :
- Academic Journal
- Accession number :
- 63188243
- Full Text :
- https://doi.org/10.1016/j.fuproc.2011.05.026