سال انتشار: ۱۳۸۷

محل انتشار: همایش بین المللی ژئولیت ایران

تعداد صفحات: ۷

نویسنده(ها):

m Asghari – Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran,
t mohammadi – Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran,
m fouadi – Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran,
a samimi – Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran,

چکیده:

Continuous nanoporous mordenite membranes were fabricated on tubular microporous mullite supports.
A hydrothermal treatment in a brass autoclave was used to prepare the zeolite membranes. The membranes
and the powder crystals collected from the bottom of the autoclave were characterized with XRD and SEM.
The membranes pervaporation properties were assessed using different ethanol feeds dehydration. The
mordenite crystallization is entirely performed at 443 k in 24 h. The continuous top-layer of the membrane
was formed by many large and oriented crystals. The polycrystalline membranes were selective for
dehydration of different ethanol/water mixtures. So, the membranes have negligible intercrystalline pores.