Asghari - Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
Mohammadi - Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
Danayi - Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran
Aziznia - Research Laboratory for Separation Processes, Faculty of Chemical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran

Zeolite membranes as nanofilters have potential in separating mixtures that are difficult to isolate with traditional techniques. They offer distinct advantages in the nano-separation of close-boiling mixtures and azeotropes in many industrially important separation processes. Nano-scale separations such as air pollution control, removal of H2S and SO2 in obtaining ultra-pure gas streams, H2 production from steam/methane reforming, and the separation of aromatic and n/i-isomers are some of their various applications in the petrochemical industry. In this work, nanoporous faujasite membranes (pore diameter = 0.74 nm) was prepared on cylindrical Porous Mullite Supports. Seeding treatments were performed using the NaX zeolite powders prepared before. The obtained zeolite was characterized with XRD and SEM. A thin and continuous X-type zeolitic top layer covered the outer surface of the support.

Faujasite; nanofiltration membranes Membrane; Hydrothermal; NaX-type Zeolite; Tubular Ceramic Support