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Hydrogen Purification using Ultra-Thin Palladium Films Supported on Porous Anodic Alumina Membranes

  • Alexander Kirchner (a1), Ian W.M. Brown (a2), Mark E. Bowden (a3) and Tim Kemmitt (a4)

Abstract

Nanostructured anodic alumina membranes have been utilized as high-temperature stable supports for 150 nm thick continuous palladium films. The palladium has been deposited by vacuum evaporation onto the rotating substrate. The thermal stability of the resulting compound membranes has been demonstrated for temperatures up to 700ºC under a reducing atmosphere. Hydrogen permeation has been measured up to 280ºC, where the permeability has a value of 2.5·10-7 mol m-2 s-1 Pa-1. At the same time the selectivity factor over carbon dioxide is at least 33.

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Hydrogen Purification using Ultra-Thin Palladium Films Supported on Porous Anodic Alumina Membranes

  • Alexander Kirchner (a1), Ian W.M. Brown (a2), Mark E. Bowden (a3) and Tim Kemmitt (a4)

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