Zeolite P/NaX composite membrane for gas separation

A stainless-steel-net-supported zeolite P/NaX composite membrane was synthesized by a secondary growth method. The zeolite P membrane covered the zeolite NaX membrane, which closely integrated with the stainless-steel-net support and showed high permeability and selectivity in H-2/N-2, and H-2/CO2 separation in both single and mixture gases. The morphologies of these membranes have been studied using with both optical microscopy and scanning electron microscopy (SEM), and the effect of the zeolite type on the permeation property was discussed. (C) 2007 Elsevier Inc. All rights reserved.