Self-diffusion of a Cation through Cation Exchange Membrane and Membrane Permeability
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概要
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The self-diffusion coefficient of an ion and the membrane permeability were studied with a system consisting of two identical electrolyte solutions separated by a cation exchange membrane. The membrane permeability to cation was estimated from the membrane conductance data. The result indicated that the membrane permeability increased with a decrease in electrolyte concentration. The self-diffusion coefficients and the concentrations of Na<SUP>+</SUP>, Cs<SUP>+</SUP>, and Ca<SUP>2+</SUP> in the membrane were also measured by the radiotracer method. At concentrations less than 0.1 M, the self-diffusion coefficients more or less increased with increasing concentrations, while the concentrations within membrane remained almost constant. The membrane permeability to ion estimated from the conductance data was in excellent agreement with that calculated by the relation in which the membrane permeability is given as the self-diffusion coefficient times the partition coefficient divided by the membrane thickness.
- 公益社団法人 日本化学会の論文
著者
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Kaibara Kozue
Department Of Biological Substances And Life Science Faculty Of Engineering Kyushu Kyoritsu Universi
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Saito Keiji
Department Of Applied Physics Graduate School Of Engineering University Of Tokyo
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Kimizuka Hideo
Department of Chemistry Faculty of Science Kyushu University
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Saito Keiji
Department of Chemistry, Faculty of Science, Kyushu University
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