A Short-time Hydrothermal treatment for Synthesis of Nanoporous Faujasite Membranes

High quality faujasite membranes were prepared using hydrothermal treatments. Tubular Porous Mullite Supports were fabricated from Kaolin clay by a temperature-programmed calcination treatment, following a leaching treatment. As observed in SEM photographs, the porosity of the support increased during the leaching treatment. The NaX faujasite zeolite powders were prepared hydrothermally and characterized with XRD and SEM. The best crystalline powder and the corresponding starting gel were respectively used for seeding treatment and hydrothermal crystallization of a thin, continuous and fully covering X-type zeolitic top layer on outer surface of the cylindrical support. The membrane was characterized with XRD and SEM.

کلیدواژه ها:

Faujasite Membrane ، Hydrothermal ، NaX-type Zeolite ، Mullite ، Tubular Ceramic Support