Carbon-zeolite NaA composite membranes

摘要: Zeolites are crystalline microporous materials with well-defined and uniform pore structure that find extensive industrial uses as adsorbents, catalysts ion exchangers [1-2]. Zeolite films supported on different have been successfully prepared potential applications highly selective membrane separators, reactors, chemical sensor microdevices [3-10]. Most of the early work focused zeolite membranes grown polymers ceramics supports. Porous carbon promising candidates supports because their high internal surface area, porosity excellent stability in a non-oxidising atmosphere. porous can modify nature themselves present other types advantages number applications. On hand, by being layer zeolite, pores be narrowed to desired subnanometer size, which is one most difficult but fascinating tasks researchers attempt [11]. This may open up novel approach tune at level changing size or shape. investigates preparation NaA tubes.