Tubular MFI Zeolite Membranes Made by In-Situ Crystallization, By Neda Kalantari

Research

Title	Tubular MFI Zeolite Membranes Made by In-Situ Crystallization
Type	Article
Keywords	MFI zeolite, Membrane, In-situ crystallization, Calcination time, Hydrothermal treatment steps.
Journal	Iranian Journal of Chemistry and Chemical Engineering
DOI	https://doi.org/10.30492/IJCCE.2012.5987
Researchers	Akram Kazemzadeh (First researcher) , Behruz Bayati (Second researcher) , Neda Kalantari (Third researcher) , Ali Akbar Babaluo (Fourth researcher)

Abstract

ABSTRACT: Polycrystalline MFI zeolite membranes were prepared on -alumina tubular support by hydrothermal treatments at 413 K. The synthesized zeolite membranes were characterized by XRD, SEM and single gas permeation. The influence of hydrothermal treatment steps and the calcination time on the zeolite layer formation were investigated. MFI zeolite membrane prepared by four subsequent hydrothermal treatments and calcined at 673K for 30 h had optimum quality from morphological and crystalline point of view. The grown MFI zeolite layer was uniform with about 20 µm thickness and well-intergrown zeolite crystals.