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IS 프로세스의 HI 분해반응공정을 위한 전해 - 전기투석(EED) HI 농축
홍성대,김정근,이상호,최상일,배기광,황갑진,Hong, Seong-Dae,Kim, Jeong-Geun,Lee, Sang-Ho,Choi, Sang-Il,Bae, Ki-Kwang,Hwang, Gab-Jin 한국수소및신에너지학회 2006 한국수소 및 신에너지학회논문집 Vol.17 No.2
An experimental study on Electro-electrodialysis (EED) for IS (Iodine-Sulfur) process which is well known as hydrogen production system was carried out for the HI concentration from HIx (HI: $H_2O$ : $I_2$ = 1 : 5 : 1) solution. The polymer electrolyte membrane and the activated carbon cloth were adopted as a cation exchange membrane and electrode, respectively. In order to evaluate the temperature effect about HI concentration in fixed molar ratio, three case of temperature were selected to $60^{\circ}C$, $90^{\circ}C$ and $120^{\circ}C$. The electro-osmosis coefficient and transport number of proton have been changed from 1.95 to 1.21 (mol/Faraday) and 0.91 to 0.76, respectively as temperature increase from $60^{\circ}C$ to $120^{\circ}C$. It can be realized that the HI mole fraction in final stage of EED experiments already over the quasi-azeotrope composition.