Comparative study of the active sites in zeolites by different probe molecules

Abstract

This review summarizes some of the recently published results concerning the acid sites in the zeolites ZSM-5 and Y studied by temperature-programmed desorption (TPD) and adsorption calorimetry using different probe molecules NH3, CO, N2O and n-hexane. For the first time it has been shown that the acid sites in hydrated zeolites are accessible for n-hexane adsorption.

U ovom radu je prikazan pregled ispitivanja kiselih aktivnih centara kod zeolita ZSM-5 i Y temperaturski programiranom desorpcijom (TPD) i adsorpcionom mikrokalorimetrijom uz korišćenje različitih probnih molekula: NH3, CO, N2O i n-heksana. Prvi put je pokazana adsorpcija n-heksana na kiselim centrima hidratisanih zeolita.