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Ueda, Yoshio*; Oya, Kaoru*; Ashikawa, Naoko*; Ito, Atsushi*; Ono, Tadayoshi*; Kato, Daiji*; Kawashima, Hisato; Kawamura, Gakushi*; Kenmotsu, Takahiro*; Saito, Seiki*; et al.
Purazuma, Kaku Yugo Gakkai-Shi, 88(9), p.484 - 502, 2012/09
no abstracts in English
Yoshida, Mitsunori*; Tanaka, Nobuyuki; Okuda, Hiroyuki; Onuki, Kaoru
International Journal of Hydrogen Energy, 33(23), p.6913 - 6920, 2008/12
Times Cited Count：34 Percentile：63.78(Chemistry, Physical)The electro-electrodialysis (EED) for enhancing HI molality in HIx solution (HI-I
-HO mixture) of quasi-azeotropic composition was examined at 90 
C using Nafion 117 and graphite electrodes. The initial current efficiency of HI molality increase in catholyte varied in the range of 25-80% depending on the operation condition such that the higher iodine molality and the higher weight ratio of anolyte solution to catholyte solution resulted in the higher efficiency. With the progress of EED, the increase rate of the HI molality decreased and, in some cases, concentration limits were observed. Electric conductivity of the HIx solution, overvoltage of the electrode reaction, and voltage drop due to the membrane were measured in the temperature range of 25-120 C, which indicated that the EED cell voltage was governed by the voltage drop due to membrane.
Kubo, Shinji; Ijichi, Masanori*; Hodotsuka, Masatoshi; Yoshida, Mitsunori*; Kasahara, Seiji; Isaka, Kazuyoshi; Tanaka, Nobuyuki; Imai, Yoshiyuki; Onuki, Kaoru
Proceedings of 2007 AIChE Annual Meeting (CD-ROM), 7 Pages, 2007/11
no abstracts in English
Tanaka, Nobuyuki; Yoshida, Mitsunori; Okuda, Hiroyuki; Sato, Hiroyuki; Kubo, Shinji; Onuki, Kaoru
Proceedings of International Conference on Advanced Nuclear Fuel Cycles and Systems (Global 2007) (CD-ROM), p.833 - 836, 2007/09
Breakdown of the cell voltage in the electro-electrodialysis process for concentrating HIx solution (HI-HO-I mixture) was preliminarily examined in an effort to clarify the optimal operation condition as well as to optimize the cell design for the application to the thermochemical water-splitting IS process for large-scale hydrogen production. Basic data such as electric resistance of HIx solution, overvoltage of the iodine-iodide ion redox reaction at graphite electrode, and the membrane voltage drop, were measured using HIx solution with composition of interest. Also, a methodology for estimating the cell voltage was discussed. The calculated cell voltage agreed well with the experimental one indicating the validity of the procedure adopted.
AlOzawa, Akira*; Matsuta, Kensaku*; Nagatomo, Takashi*; Mihara, Mototsugu*; Yamada, Kazunari*; Yamaguchi, Takayuki*; Otsubo, Takashi*; Momota, Sadao*; Izumikawa, Takuji*; Sumikama, Toshiyuki*; et al.
Physical Review C, 74(2), p.021301_1 - 021301_4, 2006/08
Times Cited Count：43 Percentile：89.22(Physics, Nuclear)no abstracts in English
Kubo, Shinji; Yoshida, Mitsunori; Sakurai, Makoto*; Tanaka, Kotaro*; Miyashita, Reiko*
Bunri Gijutsu, 35(3), p.148 - 152, 2005/05
no abstracts in English
Onuki, Kaoru; Kasahara, Seiji; Tanaka, Nobuyuki; Okuda, Hiroyuki; Yoshida, Mitsunori; Hodotsuka, Masatoshi; Iwatsuki, Jin; Imai, Yoshiyuki; Noguchi, Hiroki; Terada, Atsuhiko; et al.
no journal, ,
Development of efficient HI processing scheme is important for attaining high thermal efficiency of hydrogen production by IS process. We are studying an application of electro-electrodialysis to pre-concentrate the HIx solution before distillation, which is supplied from the Bunsen reaction section. So far, feasibility of the pre-concentration was experimentally verified and also, by flowsheet analysis, the importance was clarified of improving the performance of membrane and electrode catalyst.
Yoshida, Mitsunori; Okuda, Hiroyuki; Hodotsuka, Masatoshi; Kubo, Shinji; Onuki, Kaoru; Hino, Ryutaro
no journal, ,
no abstracts in English
Ijichi, Masanori; Yoshida, Mitsunori; Isaka, Kazuyoshi; Tanaka, Nobuyuki; Kasahara, Seiji; Okuda, Hiroyuki; Hodotsuka, Masatoshi; Kanagawa, Akihiro; Imai, Yoshiyuki; Noguchi, Hiroki; et al.
no journal, ,
no abstracts in English
Hodotsuka, Masatoshi; Okuda, Hiroyuki; Yoshida, Mitsunori; Kubo, Shinji; Onuki, Kaoru; Hino, Ryutaro
no journal, ,
no abstracts in English
Ijichi, Masanori; Kasahara, Seiji; Yoshida, Mitsunori; Isaka, Kazuyoshi; Tanaka, Nobuyuki; Imai, Yoshiyuki; Kubo, Shinji; Onuki, Kaoru; Hino, Ryutaro
no journal, ,
High efficiency flowsheet for thermochemical hydrogen production IS (Iodine-Sulfur) process is investigating. In order to establish the reference flowsheet that is concidering the recent experimental data and engineering investigation, steady state process simulation was done using process simulation code PRO/2 and thermochemical model/database(developed by OLI Systems, Inc.) which was extended for IS process. The results of parameter analyses and established reference flowsheet are reported.
Yoshida, Mitsunori; Tanaka, Nobuyuki; Okuda, Hiroyuki; Kubo, Shinji; Onuki, Kaoru; Hino, Ryutaro
no journal, ,
no abstracts in English
plasmasShiraishi, Junya; Miyato, Naoaki; Matsunaga, Go; Toma, Mitsunori; Honda, Mitsuru; Suzuki, Takahiro; Yoshida, Maiko; Hayashi, Nobuhiko; Ide, Shunsuke
no journal, ,
no abstracts in English
