Liquid phase decomposition of t‐butyl derivatives over solid acidic catalyst

Abstract

AbstractThe de‐t‐butylation of some t‐butyl‐derivatives has been carried out in the liquid phase using amorphous silica alumina and HY type zeolite. The deactivation coefficients obtained in liquid phase were about 10 to 100 times as large as those in the vapor phase de‐t‐butylation of t‐butylbenzene. The activation energies for the reaction of the phenolic derivatives were nearly the same as that for the vapor phase de‐r‐butylation. However, the activation energies for the di‐t‐butyl derivatives were almost doubled. The activity of HY type zeolite was lower than that of the silica alumina, but the shape selectivity of the former was observed in the reaction of p‐t‐butyl‐o‐phenol.