Initial Study on Hydrogen Permeation with Flat Sheet Pd/Ag Membrane for Mixture of Hydrogen and Carbon Dioxide

Abstract:

The hydrogen permeation with a flat sheet Pd/Ag membrane for mixture of hydrogen and carbon dioxide was investigated experimentally. A flat sheet, dense 77wt.%Pd/23wt.%Ag purification membrane with thickness of 25μm and diameter of 0.02m was used. The membrane temperature, total upstream pressure and inlet H₂ mole fraction were set to 623K, 0.25MPa and 0.75, respectively. Meanwhile, the downstream pressure was set at atmospheric. Mean mole flux (feed flow rate/effective membrane surface area) was varied between 0.089-0.62mol.s^-1.m^-2. When the mean mole flux is increased, hydrogen permeation flux increases, which is supposed due to the effect of flow velocity. In addition, the analytical result based on Sieverts’ equation with the effect of permeation is found to be very close with the experimentally obtained hydrogen permeation flux. For permeation with H₂:CO₂ mixture, future work is necessary to investigate the variation in permeation flux with time.

• Periodical: Applied Mechanics and Materials (Volume 819)
• Pages: 438-442
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.819.438
• Online since: January 2016
• Authors: Hasan Mohd Faizal*, Yuki Kawasaki, Takeshi Yokomori, Toshihisa Ueda
• Keywords: Hydrogen, Pd/Ag Membrane, Reformer, Sieverts’ Equation

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