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Volume 41 (2016)
- Issue 6 Pages 258-
- Issue 5 Pages 196-
- Issue 4 Pages 132-
- Issue 3 Pages 96-
- Issue 2 Pages 50-
- Issue 1 Pages 2-
Volume 41, Issue 3
Displaying 1-6 of 6 articles from this issue
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Special Topic : Membrane technology for the efficient energy conversion
Review Article
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Miki Yoshimune, Kenji Haraya2016 Volume 41 Issue 3 Pages 96-101
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL OPEN ACCESSFuel cell vehicle (FCV) is garnering much attention as a new environmentally–friendly vehicle of the future. Toward the popularization of the FCVs, a number of technologies of the manufacture, storage and transport of ultrapure hydrogen for the hydrogen station is required. Currently, the researches related to hydrogen energy carriers such as liquid hydrogen, ammonia and organic chemical hydrides have been developed. In this study, ultrapure hydrogen purification technology converted from methylcyclohexane as the organic chemical hydride using carbon membranes for the hydrogen station was investigated. In addition, energy requirement for ultrapure hydrogen purification process by means of carbon membranes was evaluated and compared with that of pressure swing adsorption (PSA) method.View full abstractDownload PDF (815K) -
Masakoto Kanazashi, Toshinori Tsuru2016 Volume 41 Issue 3 Pages 102-107
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL OPEN ACCESSThe possibility of applying a catalytic membrane reactor (CMR) to SO3 decomposition in a low–temperature range with the purpose of producing CO2–free hydrogen in Iodine–Sulfur thermochemical cycle was reviewed. A membrane reactor simulation, which is a one-dimensional, isothermal and plug–flow model, was introduced to clarify the strategy for the fabrication of membranes (O2 permeance, selectivity (O2/SO2, O2/SO3)) for the H2SO4 decomposition in IS thermochemical processes. The O2/SO2 permeation properties through organosilica membranes were introduced.View full abstractDownload PDF (1284K) -
Ayumi ikeda, Mikihiro Nomura2016 Volume 41 Issue 3 Pages 108-113
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL OPEN ACCESSThermochemical water splitting IS process is one of the hydrogen production method. The HI decomposition reaction is one of the key reactions in the IS process. The equilibrium conversion of HI decomposition is about 20% at 400℃. In order to improve the conversion, a membrane reactor with H2 permselective membrane can be applied to the reaction. In this study, a silica hybrid membrane was prepared by using a counter diffusion chemical vapor deposition method. The effects of the deposition conditions on the pore size was discussed. The pore size of the HTMOS derived membrane deposited at 450℃ was evaluated at 0.48 nm indicating that the membrane can be applied for the H2/HI separation. HI permeation tests were performed at room temperature and 400℃ through the HTMOS derived membranes. The H2 permeance was 5.0×10–7 mol m–2 s–1 Pa–1 with the H2/HI selectivity of 6820.View full abstractDownload PDF (727K) -
Tetsuya Yamaki, Takehide Kodaira, Shin-ichi Sawada, Nobuyuki Tanaka, S ...2016 Volume 41 Issue 3 Pages 114-120
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL OPEN ACCESSThe Bunsen reaction using an electrolysis cell separated by a cation exchange membrane has been recently proposed as a promising approach to increasing the thermal efficiency of the IS process. We prepared new cation exchange membranes for possible use in this so–called electrochemical Bunsen reaction by the radiation–induced graft copolymerization of styrene and divinylbenzene (DVB) into poly(ethylene–co–tetrafluoroethylene) films and subsequent sulfonation. Quantitative sulfonation of the DVB–crosslinked polystyrene graft–chains led to the preparation of membranes with various ion exchange capacities, thereby making it possible to control their proton conductivities over a wide range. The resulting membranes also exhibited lower water uptake and, therefore, a reduced water flux compared to the non–crosslinked and Nafion membranes. Both H2SO4 in the anolyte and HI in the catholyte were continuously concentrated during the electolysis for 3 h. Reaction overpotential values were similar between our and Nafion membranes. These results demonstrate the applicability of the radiation–grafted cation exchange membranes to the electrochemical Bunsen reactor.View full abstractDownload PDF (837K) -
Kiyoshi Kanamura2016 Volume 41 Issue 3 Pages 121-126
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL OPEN ACCESSLithium ion batteries have been utilized in portable devices and electric vehicles. In this report, a separator for lithium ion batteries is described from the point of view of battery performance. Some of characteristics of separator are introduced, in addition, a newly developed separator and a three dimensionally structured separator are described in this report, in detail.View full abstractDownload PDF (981K)
Products Spotlight
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Atsuko Miyamoto, Hiroki fujioka2016 Volume 41 Issue 3 Pages 127-129
Published: 2016
Released on J-STAGE: October 05, 2016
JOURNAL RESTRICTED ACCESSReverse osmosis processes have been developed for energy saving of desalination plants. RO spiral wound elements could reduce feed pump energy through element improvements. Thicker feed spacer with thinner RO membrane supported low differential pressure and high flow at the same time. ESPA2-LD MAX RO element was developed under the concept of energy saving during operation at desalination plant. Thinner membrane was adopted to the new element that could hold promise in the future for other category of desalination plant.View full abstractDownload PDF (681K)
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