Synthesis and Characterization of NaX Molecular Sieve Zeolite Films on Ceramic Paper for Membranes
NaX molecular sieve films on ceramic paper prepared by in-situ hydrothermal method were investigated. The NaX zeolite seed crystals of a uniform size of 5 µm were synthesized by hydrothermal method in a mother solution having a composition of 3.5Na2O : Al2O3 : 2.1SiO2 : 500~1000 H2O. These dip-coated NaX seed crystal on ceramic paper lead to further the thickness (20 ~ 100 µm) of NaX film on the substrate at 90°C for longer 3~7 days in autoclave. Pure zeolite films consisting of a continuous intergrown of 5~ 20 µm NaX crystal have been prepared on the substrates. The zeolite films were characterized by XRD, SEM, BET and XRF.
Omer Van der Biest, Michael Gasik, Jozef Vleugels
H. J. Lee et al., "Synthesis and Characterization of NaX Molecular Sieve Zeolite Films on Ceramic Paper for Membranes ", Materials Science Forum, Vols. 492-493, pp. 317-324, 2005