Dynamic Behavior of Gas Permeation in Solid Polymer Electrolyte Membranes*

概要

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The permeabilities of ethylene, propylene and carbon dioxide through various solid polymer electrolyte (SPE) membranes such as Nafion 417 (N-417), Asahikasei K-101 and A-201 and metal ion modified membranes have been compared at temperature ranges 0〜80℃, using a flow-type diffusion cell newly developed for gas permeation under atmospheric pressure. K-101 and A-201 give no reproducibility of the permeability because of the cracks irreversibly formed on the membranes during the diffusion of gases, whereas N-417 gives a good reproducibility despite a small amount of permeability. On the silver-supported membrane, the permeabilities of C_2H_4 and C_3H_6 are clearly enhanced 2〜3 times even though CO_2 is reduced to one third, and this is suggested by the formation of silver-olefin complexes which work as a pump to carry olefin gas. On the nickel-supported membranes, permeability is always reduced because the ion channel of the membrane for gas diffusion is diminished by the metal ions.　
北見工業大学の論文