화학공학소재연구정보센터
Chemistry Letters, Vol.38, No.5, 502-503, 2009
Oxide Glass/Amorphous Metal Alloy Laminated Membrane for Hydrogen Separation
A five-layered membrane composed of an amorphous Ni-Nb-Zr alloy substrate (ca. 30 mu m), thin proton-electron mixed conductive tungsten phosphate glass films (ca. 50 nm) and Ni coatings (ca. 20 nm) was fabricated by pulsed laser deposition and vacuum evaporation. A flux of hydrogen passed through the laminated membrane without Pd at 673 K at ca. 2 x 10(-6) mol.cm(-2).s(-1), and no degradation was observed in the 10 h operation. The present results suggest that amorphous Ni-Nb-Zr alloy passivated with WO3-based oxide glass is a promising material for H-2 filtering in a medium temperature range.