Surface Light-Induced Drift in Porous Media

  • Michael A. Vaksman
Conference paper

Abstract

Diffusion and flow of gases in porous media have attracted considerable attention for many decades [1]. Interest in such research has been motivated by its many fields of application, such as surface catalysis, gas separations, soil physics, etc. Gas flows often arise here due to the difference in gas pressure or concentration between the opposing surfaces of the porous medium. In the following report, gas flows in porous media, caused not by the concentration or pressure gradients but by Surface Light-Induced Drift (SLID) [2–5], are discussed. Unlike the former case, the flow of a gas now becomes selective. Namely, one can force only the molecules of the resonant gas through the porous membrane, while leaving the other components untouched. It implies possible benefits in using the SLID for gas separations. Also, due to a high surface/volume ratio, porous media can be especially favorable for studying the state-specificity of surface chemical reactions [4] and catalysis.

Keywords

Porous Medium Surface Chemical Reaction Porous Membrane Soil Physic Surface Catalysis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. 1.
    F.A.L. Dullien, Porous Media: Fluid Transport and Porous Structure. Academic Press (1992), pp. 167–313.Google Scholar
  2. 2.
    A.V. Ghiner, M.I. Stockmann, and M.A. Vaksman, Phys. Lett. 96A, 79 (1983).CrossRefGoogle Scholar
  3. 3.
    M.A. Vaksman, Phys. Rev. A 44, R4102 (1991); Phys. Rev. A 48, R26 (1993).CrossRefGoogle Scholar
  4. 4.
    M.A. Vaksman and A. Ben-Reuven, Phys. Rev. A 45, # 11, 7883 (1992); Talk presented at the 12th International Vacuum Congress/8th International Conference on Solid Surfaces, 12–16 October 1992, The Hague, The Netherlands. -Surf. Sci., 287/288. 196 (1993).Google Scholar
  5. 5.
    M.A. Vaksman, Surface light-induced drift in porous media (Phys. Rev. A, accepted for publication).Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Michael A. Vaksman
    • 1
  1. 1.Department of ChemistryUniversity of Detroit MercyDetroitUSA

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