Cu-ZSM-5, CuZn-ZSM-5 and H-ZSM-5 have been studied for propene aromatization at comparable conditions. It was established that all samples are active for aromatization (yields {equal to or succeeds}50%) and demonstrate high selectivity for benzene, toluene and xylenes formation ({equal to or succeeds} 90%). The role of acid centers in all stage of the aromatization is discussed. © 1990 Akadémiai Kiadó.