DEVELOPMENT OF HYDROGEN PURIFICATION MEMBRANE BASED ON Pd-Mn-Ag TERNARY SYSTEM

Abstract

In this paper, we investigate Pd-Mn-Ag ternary system for potential alloys as separation membranes. For this purpose, thin film membranes of varying compositions were produced via magnetron sputtering. These were evaluated via four probe resistivity measurements up to temperature of 450oC. A reactivity index pH2/pAr was used as a measure of the suitability of the thin film as separation membrane. Here pH2 and pAr are the resistivity of the film under hydrogen and argon respectively. The temperature at which this index was maximum was taken as potential operating temperature of the membrane. The preliminary results show that alloys with compositions confined to a triangle where Pd >=38 are candidates for possible hydrogen separation membrane.