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論文

Research and development on membrane IS process for hydrogen production using solar heat

Odtsetseg, M.; 岩月 仁; 田中 伸幸; 野口 弘喜; 上地 優; 井岡 郁夫; 久保 真治; 野村 幹弘*; 八巻 徹也*; 澤田 真一*; et al.

International Journal of Hydrogen Energy, 44(35), p.19141 - 19152, 2019/07

Thermochemical hydrogen production has attracted considerable interest as a clean energy solution to address the challenges of climate change and environmental sustainability. The thermochemical water-splitting iodine-sulfur (IS) process uses heat from nuclear or solar power and thus is a promising next-generation thermochemical hydrogen production method that is independent of fossil fuels and can provide energy security. This paper presents the current state of research and development of the IS process based on membrane techniques using solar energy at a medium temperature of 600$$^{circ}$$C. Membrane design strategies have the most potential for making the IS process using solar energy highly efficient and economical and are illustrated here in detail. Three aspects of membrane design proposed herein for the IS process have led to a considerable improvement of the total thermal efficiency of the process: membrane reactors, membranes, and reaction catalysts. Experimental studies in the applications of these membrane design techniques to the Bunsen reaction, sulfuric acid decomposition, and hydrogen iodide decomposition are discussed.

口頭

R&D status of heat utilization technologies for high-temperature gas-cooled reactor and solar energy

Odtsetseg, M.; 岩月 仁; 田中 伸幸; 野口 弘喜; 上地 優; 井岡 郁夫; 野村 幹弘*; 八巻 徹也*; 都留 稔了*; 町田 正人*; et al.

no journal, , 

The thermochemical water splitting iodine-sulfur (IS) process has potential for producing a large amount of hydrogen without restriction of resources and CO$$_{2}$$ emission in the upcoming hydrogen society. The IS process harnesses heat energy in ranges of temperature, which is generated by High Temperature Gas-cooled Reactors (HTGRs) or solar energy. For application of solar energy, innovative membrane techniques are required to recover total thermal efficiency because temperature (ca. 600$$^{circ}$$C) of heat derived from the solar energy is lower than that of HTGRs (ca. 900$$^{circ}$$C). This paper summarizes current R&D of key devices of membranes and catalysts, and of process evaluation.

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