The modeling of gas phase permeation through iron and nickel membranesThe gas phase permeation of hydrogen through metal membranes encompasses many kinetic processes. This paper reviews a permeation model which incorporates second order gas-surface reaction kinetics with simple bulk diffusion. The model is used to investigate the effect of this particular surface reaction of steady-state permeation. The dependence of the steady-state permeation flux on temperature, pressure, and thickness of the membrane has been calculated. The model predicts that the bulk controlled steady-state flux will change to a surface limited steady-state flux as either the temperature or thickness of the membrane is reduced. Finally, using independently derived parameters, the model is compared with permeation measurements on iron and nickel membranes.
Document ID
19900050915
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Kuhn, David K. (Cornell University Ithaca, NY, United States)
Shanabarger, Mickey R. (California, University Santa Barbara, United States)