Equilibrium potential across cation exchange membrane in HI-I $_{2}$ -H $_{2}$ O solution

Tanaka, Nobuyuki ; Onuki, Kaoru

The equilibrium potential across Nafion 117 in a HIx solution (HI-I $_{2}$ -H $_{2}$ O mixture) was measured for an electro-membrane process (electro-electrodialysis, EED) in the thermochemical water-splitting Iodine-Sulfur process. The experimental results were correlated with a theoretical formula derived on the basis of the electrochemical reaction, the Donnan equilibrium and the Nernst-Planck equation. The obtained empirical formula could reproduce the experimental equilibrium potential within 0.03 V. Also, the obtained regression parameter agreed well with that calculated from the vapor liquid equilibrium data of a HIx solution reported by Hodotsuka et al. (2008).

Language	:	English
Journal	:	Journal of Membrane Science
Volume	:	357
Number	:	1-2
Pages	:	p.73 - 79
Publication Year/Month	:	2010/06
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Paper URL	:	https://doi.org/10.1016/j.memsci.2010.04.004
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Keywords	:	no keyword
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Registration No. : AA20090227
JAEA Abstracts No. : 38000858
Paper Submission No. : 7495

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Equilibrium potential across cation exchange membrane in HI-I-HO solution

Equilibrium potential across cation exchange membrane in HI-I $_{2}$ -H $_{2}$ O solution