A layered double hydroxide (LDH) layer was grown directly on a porous stainless steel (PSS)surface to reduce the pore opening of the PSS and to be a middle layer retarding Pd/Feinterdiffusion. A thin Pd film (w7.85 mm) was plated on the modified PSS tube by an electrolessplating method. A helium leak test proved that the thin Pd on the LDH-modified PSSsubstrate was free of defects. The membrane had a H2 flux of 28e36 m3/(m2 h) and H2/Heselectivity larger than 2000 at a pressure difference of 1 bar. Thermal cycling between roomtemperature and 673 K was performed and showed that the membrane exhibited goodpermeance and selectivity. Long-term evaluation (1500 h) of the membrane at 673 Kshowed static results of H2 flux (w30 m3/(m2 h)) and H2/He selectivity (w2000) over the1500 h test period
To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.