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1 results

  • Dense Metal Membranes for the Production of High-Purity Hydrogen

  • David S. Sholl, Y.H. Ma
  • Journal:
    MRS Bulletin / Volume 31 / Issue 10 / October 2006
    Published online by Cambridge University Press:
    31 January 2011, pp. 770-773
    Print publication:
    October 2006

  • Dense metal membranes are a well-developed technology for the production of high-purity hydrogen. The physical mechanism of hydrogen transport across metal films—dissociation of molecular hydrogen, diffusion of interstitial atomic hydrogen, and subsequent recombinative desorption of molecular hydrogen—means that metal membranes can have extremely high selectivities for hydrogen transport relative to other gases. We describe current experimental and theoretical trends in the development of metal alloy membranes for hydrogen purification in practical, chemically robust processes.