Origin of catalyst deactivation in Fries rearrangement of phenyl acetate over zeolite H-Beta

Abstract

The zeolite catalysed Fries rearrangement of phenyl acetate: yielding o -HAP, p -HAP, p -AAP and phenol was investigated in a batch reactor. It is shown that the decline of activity of the catalyst in the initial period is associated with product inhibition by phenolic compounds (phenol and hydroxyacetophenons). The long-term deactivation is caused by coking. The catalytic activity of zeolite H-Beta during the Fries rearrangement of phenyl acetate (PA) was investigated. Experiments were carried out in a batch reactor. It is shown that the decline of activity of the catalyst is associated with inhibition by the phenolic product compounds (phenol and hydroxyacetophenons). The long-term deactivation is caused by coking.