PALLADIUM-ALLOYED MEMBRANES AND METHODS OF MAKING AND USING THE SAME

摘要

Palladium-alloyed membranes for high temperature applications such as separating a hydrogen-containing fluid stream into permeate and retenate streams. The hydrogen-containing fluid stream is separated at a temperature from about 573 to about 1, 173 degrees Kelvin. The permeate stream substantially contains molecular hydrogen. The retenate stream is substantially depleted of molecular hydrogen compared to the hydrogen-containing fluid stream. The hydrogen-containing fluid stream is separated into permeate and retenate streams by permeating the hydrogen in the hydrogen-containing fluid stream through a palladium-alloyed membrane. The palladium-alloyed membrane has a nitrogen leakage growth rate at about 823 degrees Kelvin of no more than about 7x10-12 (mol/m2/s/Pa)/h. The palladium-alloyed membrane contains palladium and one or more of ruthenium, rhodium, iridium, platinum, silver, gold and osmium.