Hydrogen purification membranes, hydrogen purification devices, and fuel
processing and fuel cell systems that include hydrogen purification
devices. The hydrogen purification membranes include a metal membrane,
which is at least substantially comprised of palladium or a palladium
alloy. In some embodiments, the membrane contains trace amounts of carbon,
silicon, and/or oxygen. In some embodiments, the membranes form part of a
hydrogen purification device that includes an enclosure containing a
separation assembly, which is adapted to receive a mixed gas stream
containing hydrogen gas and to produce a stream that contains pure or at
least substantially pure hydrogen gas therefrom. In some embodiments, the
membrane(s) and/or purification device forms a portion of a fuel
processor, and in some embodiments, the membrane(s) and/or purification
device forms a portion of a fuel processing or fuel cell system.
