The t-Butylation of Phenol in Supercritical Carbon Dioxide over H-Y Zeolite.Remarkable Enhancement of Catalytic Performance for the Formation of 2,4-Di-t-butylphenol

摘要

Remarkable enhancement of the formation of 2,4-di-t-butyl-phenol was observed in the t-butylation of phenol over H-Y zeolite under supercritical CO_2 medium.Supercritical CO_2 renders active sites free for the catalysis by fast removal of coke-precursors.