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Efficient Acylation of Anisole over Hierarchical Porous ZSM‐5 Structure
Author(s) -
Padmanabhan A.,
Selvin R.,
Hsu H.L.,
Xiao L.W.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200900542
Subject(s) - anisole , catalysis , acylation , acetic anhydride , zsm 5 , chemistry , friedel–crafts reaction , organic chemistry , porosity , chemical engineering , zeolite , engineering
Friedel‐Crafts acylation is one of the most important methods to prepare aromatic ketones which are used in manufacturing fine and speciality chemicals, as well as pharmaceuticals. Herein, we report an efficient and convenient procedure for the acylation of anisole with acetic anhydride, using a hierarchical porous ZSM‐5 catalyst. The hierarchical porous ZSM‐5 catalyst was synthesized using styrene butadiene rubber (SBR) as macroporous template. The catalysts were characterized for their structural features by using XRD, SEM, and FT‐IR analyses. The effect of temperature, molar ratio, and catalyst weight on the acylation of anisole was studied in detail. The reaction parameters such as anisole‐to‐acetic anhydride mole ratio, catalyst weight, and reaction temperature were optimized as 5:1, 0.2 g, and 70 °C, respectively. The method described here is environmentally benign and replaces the conventional catalyst by a highly active and reusable catalyst.