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O system and the HI+HO+I systemHodotsuka, Masatoshi; Yang, X.*; Okuda, Hiroyuki; Onuki, Kaoru
Journal of Chemical and Engineering Data, 53(8), p.1683 - 1687, 2008/07
Times Cited Count：28 Percentile：69.24(Thermodynamics)The isobaric Vapor Liquid Equilibrium(VLE) data in the pressure range of 0.11-0.58MPa where no experimental data had existed was measured for the purpose of increasing VLE data of hydriodic acid which is important physical properties which influence greatly the heat balance and mass balance in the thermochemical IS Cycle. Bubbling point and VLE data of hydriodic acid, which is prepared as adding iodine to almost azeotrope (57%) in the I/HI molar ratio from 0 to 4, were acquired at atmospheric pressure using a glass-made Othemer still. It was confirmed that the ratio of HI/HO of pseudo azeotrope increased as adding iodine. Furthermore, bubbling point and VLE data near the azeotrope in the high pressure range using a tantalum and Hastelloy made Gillespie still. The results quantitatively showed decrese of HI/HO molar ratio of azeotrope as increasing pressure, which used to be estimated by the result of measuring total pressure of hydriodic acid.
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
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
Hodotsuka, Masatoshi; Yang, X.*; Okuda, Hiroyuki; Kubo, Shinji; Onuki, Kaoru; Hino, Ryutaro
no journal, ,
no abstracts in English
Hodotsuka, Masatoshi; Yang, X.*; Okuda, Hiroyuki
no journal, ,
The VLE data of Hydriodic acid have been measured.
Okuda, Hiroyuki; Hodotsuka, Masatoshi; Kubo, Shinji; Onuki, Kaoru
no journal, ,
Vapor pressure of hydroiodic acid is necessary for design of distillation column, which is important for improvement of thermal efficiency of IS process. In general, vapor pressure is significant data for getting gas-liquid equilibrium data or azeotropic data, which are necessary for design and operation of distillation separation process. However, the vapor pressure of hydroiodic acid has not almost been known, because it is difficult to design a measurement apparatus to use the corrosive-resistant material for hydroiodic acid such as tantalum, Teflon, and the resisting pressure glass. So, we sellect synthetic method in the measurement method at high pressure such as circulation method, currency method, and static method. Synthetic method has simple structure andsuitable for the measurement of high corrosive material such as supercritical water at high pressure.
