Hydrogen purifier
From Wikipedia, the free encyclopedia
A hydrogen purifier is a device to purify hydrogen, the ultra-high purified hydrogen is needed for applications like PEM fuel cells . Different methods are used but the most promising technique for removing unwanted contaminants uses dense thin-metal membrane purifiers which are compact, relatively inexpensive and simple to use[1].
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[edit] Palladium membrane hydrogen purifiers
The palladium membrane is typically a metallic tube of a palladium and silver alloy material possessing the unique property of allowing only monatomic hydrogen to pass through its crystal lattice when it is heated above 300°C.[2]
[edit] Pressure swing adsorption
Pressure swing adsorption is used for the removal of carbon dioxide (CO2) as the final step in the large-scale commercial synthesis of hydrogen
