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Effective Hydrogen Separation Using Ion Beam Modified Polymeric Membranes

Published online by Cambridge University Press:  11 February 2011

M. R. Coleman,
X. Xu,
J. Ilconich,
J. Ritchie and
L. Hu
M. R. Coleman
Affiliation:
Univ. of Toledo, Dept of Chem. & Env. Eng., Toledo, Ohio.
X. Xu
Affiliation:
Univ. of Toledo, Dept of Chem. & Env. Eng., Toledo, Ohio.
J. Ilconich
Affiliation:
Univ. of Toledo, Dept of Chem. & Env. Eng., Toledo, Ohio.
J. Ritchie
Affiliation:
Univ. of Toledo, Dept of Chem. & Env. Eng., Toledo, Ohio.
L. Hu
Affiliation:
Univ. of Toledo, Dept of Chem. & Env. Eng., Toledo, Ohio.
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Abstract

High purity H2 gas streams are increasingly important for a variety of applications including feed gases for fuel cells. The potential of hydrogen gas as primary energy source has generated considerable interest in hydrogen separation technologies. We have been investigating ion beam irradiation as a method to modify polymeric membranes to enhance both hydrogen permeability and permselectivities. Combined high permeabilities and permselectivities are required to give high recoveries of high purity hydrogen. Ion irradiation typically results in the formation of numerous crosslinks within the polymer matrix that should enable these materials to maintain selectivities at high temperatures and to resist chemical attack. Helium separations over a range of temperatures of irradiated polyimides were used as a model of the hydrogen system. Finally, the impact of irradiation conditions on gas separations in these materials will be addressed.

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References

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