Membranes of Ti26Ni21V53 were evaluated as a potential replacement for Pd-based membranes. The pressure–temperature–hydrogen permeation relationships of Pd-coated Ti26Ni21V53 alloy membrane were investigated under pure hydrogen and mixed hydrogen gas with carbon dioxide and carbon monoxide in a pressure range from 0.5 to 2atm over a wide temperature range including the typical hydrogen membrane operating temperature range (350–450C). The experiments showed that the hydrogen flux was directly proportional to the temperature at constant pressure according to an Arrhenius-type relationship, whereas it was not proportional to the square root of hydrogen partial pressure in little accordance with the Sievert's law. The hydrogen permeability values obtained for the Pd-coated Ti26Ni21V53 alloy membrane under present conditions were higher than the pure palladium and those previously published in the Ti–Ni–V ternary systems.

The Effect of Temperature and Pressure on the Hydrogen Permeation through Pd-Coated Ti26Ni21V53 Alloy Membrane under Different Atmospheres. S.I.Jeon, E.Magnone, J.H.Park, Y.Lee: Materials Letters, 2011, 65[15-16], 2495-7