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Nagasawa, Naotsugu; Taguchi, Mitsumasa
Isotope News, (736), p.47 - 50, 2015/08
no abstracts in English
Iwai, Yasunori; Kubo, Hitoshi*; Oshima, Yusuke*
Kagaku, 70(5), p.35 - 40, 2015/05
We have successfully developed a new hydrophobic platinum catalyst for collecting tritium at nuclear fusion reactors. Catalysts used to collect tritium are called hydrophobic precious metal catalysts. In Japan, hydrophobic precious metal catalysts manufactured from polymers have been used for heavy water refinement. However, this catalyst has issues related to embrittlement to radiation and thermal stability. These technological issues needed to be solved to allow for its application to nuclear fusion reactors requiring further enrichment from highly-concentrated tritiated water. We developed a new method of manufacturing catalysts involving hydrophobic processing with an inorganic substance base. As a result, previous technological issues were able to be solved with the development of a catalyst that exhibited no performance degradation in response to radiation application of 530 kGy, a standard for radiation resistance, and maintenance of thermal stability at over 600C, which is much higher than the 70C temperature that is normally used. The catalyst created with this method was also confirmed to have achieved the world's highest exchange efficiency, equivalent to 1.3 times the previously most powerful efficiency. The application of this catalyst to the liquid phase catalytic exchange process is expected to overcome significant technological hurdles with regards to improving the reliability and efficiency of systems for collecting tritium from tritiated water.
Fitriana, Y.*; Sato, Katsuya; Narumi, Issey*; Saito, Tsutomu*
Biocontrol Science and Technology, 24(9), p.1052 - 1061, 2014/06
Times Cited Count:3 Percentile:16.13(Biotechnology & Applied Microbiology)Yagi, Toshiaki
Dai-14-Kai Hoshasen Riyo Gijutsu Semina; Hirogaru Hoshasen No Sangyo Riyo Koen Tekisuto, p.67 - 72, 2004/10
no abstracts in English
Nagasawa, Naotsugu; Yagi, Toshiaki
Science & Technology Journal, 13(10), p.20 - 21, 2004/10
no abstracts in English
Ishihara, Masahiro
Tanso, (208), p.135 - 144, 2003/09
no abstracts in English
Ishino, Masahiko; Yoda, Osamu; Takenaka, Hisataka*; Sano, Kazuo*; Koike, Masato
Surface & Coatings Technology, 169-170(1-3), p.628 - 631, 2003/06
no abstracts in English
Suhartini, M.; Mitomo, Hiroshi*; Nagasawa, Naotsugu; Yoshii, Fumio; Kume, Tamikazu
Journal of Applied Polymer Science, 88(9), p.2238 - 2246, 2003/00
Times Cited Count:46 Percentile:79.83(Polymer Science)no abstracts in English
Ishino, Masahiko; Yoda, Osamu; Sano, Kazuo*; Koike, Masato
X-Ray Mirrors, Crystals, and Multilayers II (Proceedings of SPIE Vol.4782), p.277 - 284, 2002/12
no abstracts in English
Ishino, Masahiko; Yoda, Osamu
Journal of Applied Physics, 92(9), p.4952 - 4958, 2002/11
Times Cited Count:6 Percentile:28.33(Physics, Applied)no abstracts in English
Makuuchi, Keizo
Nihon Gomu Kyokai-Shi, 75(2), p.85 - 89, 2002/02
no abstracts in English
Ito, Hitoshi*
Shokuhin Shosha, 36(1-2), p.1 - 7, 2001/09
no abstracts in English
Uwaba, Tomoyuki
JNC TN9420 2000-005, 28 Pages, 2000/03
In the first phase of the feasibility study, their basic objectives are presentating the feasible image and scenario of development of the FBR cycle system, which is composed of the fast reactor, spent fuel reprocessing and fuel manufacturing facility. In the development of the FBR system in this phase, various ideas of plants are to be studied, which include coolant types such as sodium, heavy metals, gases(CO, He), wator, and middle or small size of the reactor, and fuel types (MOX, metal and nitride). In this report, as a part of this study, materials used for the core of the helium gas cooled reactor and their integrity (corrosion, mechanical and irradiation property) under high temperature helium atmosphere were investigated from open literatures.
Shimizu, Yuichi; Yoda, Osamu; Sasuga, Tsuneo*; Teraoka, Yuden; Yokoya, Akinari; Yanagihara, Mihiro*
JAERI-Tech 2000-021, p.45 - 0, 2000/03
no abstracts in English
Yoshii, Fumio
Kombatekku, 28(3), p.5 - 9, 2000/03
no abstracts in English
Yoshii, Fumio; Darwis, D.*; Nugroho, P.*; Mitomo, Hiroshi*
IAEA-SM-365, p.7 - 8, 2000/00
no abstracts in English
Yoshii, Fumio
Hoshasen To Sangyo, (82), p.26 - 30, 1999/06
no abstracts in English
Yoshii, Fumio
Purasuchikku Eji, 44(10), p.144 - 147, 1998/10
no abstracts in English
Seguchi, Tadao
Genshiryoku eye, 44(8), p.16 - 17, 1998/08
no abstracts in English
Yoshii, Fumio
Hoshasen To Sangyo, (80), p.48 - 50, 1998/00
no abstracts in English