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Diffusion Coefficient for gases at different temperatures

  1. May 22, 2009 #1
    Does anyone know figures for Diffusivity (diffusion coefficients) for two gases at different temperatures.

    Such as air - Hydrogen or air-methane.

    For example the diffusivity of hydrogen into air when the hydrogen is at 300C and the air at 100C.

    Please don't point me to Fick's laws unless you can be specific about how these work for the above as, as far as I am aware they are based on gas at the same temperature.
  2. jcsd
  3. Feb 9, 2011 #2
    No one has any ideas?
    How about for the same gas at different temp?
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