Zeolite coated structures for the acylation of aromatics

Zeolites H-BEA, H-FAU and Nafion/silica composites show high activity in th e acylation of anisole with octanoic acid. A study of activity, surface are a characteristics and acidity of zeolite H-BEA shows that mesoporosity and the Si/Al ratio are very important features for activity. Coating a monolit hic carrier by a convenient coating procedure with BEA results in an active and selective integrated catalyst-react or configuration for the acylation of aromatics. Due to the binding capacity of the silica binder a mechanica lly stable coating layer was obtained. (C) 2001 Elsevier Science B.V. All r ights reserved.