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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.
열화학적 수소제조 IS 프로세스의 효율향상을 위한 전해-전기투석의 실험적 평가
홍성대(Hong, Seong-Dae),김정근(Kim, Jeong-Geun),이상호(Lee, Sang-Ho),최상일(Choi, Sang-Il),배기광(Bae, Ki-Kwang),황갑진(Hwang, Gab-Jin) 한국신재생에너지학회 2006 한국신재생에너지학회 학술대회논문집 Vol.2006 No.06
Electro-electrodialysis (EED) experiments were carried out for the HI concentration from HIx (HI-H₂O-I₂) solution to improve the Hl decomposition reaction in the thermochemical water-splitting is (iodine-Sulfur) process. EED cell is composed of the collector electrode and electrolyte. Nafion 117 which was cation exchange membrane used as an electrolyte, and the activated carbon cloth used as an electrode. The HI concentration experiment was carried out using the HIx solution and molar ratio of the I₂ were varied from 1 to 3 mole. The cell voltages were decreased as temperature increase. And, membrane properties such as transport number of proton and electro-osmosis coefficient were decreased as temperature increase