TY - GEN
T1 - Synthesis of high purity li5ALO4 powder by solid state reaction under the H2 firing
AU - Ogawa, Seiya
AU - Shin-Mura, Kiyoto
AU - Otani, Yu
AU - Niwa, Eiki
AU - Hashimoto, Takuya
AU - Hoshino, Tsuyoshi
AU - Sasaki, Kazuya
N1 - Funding Information:
Seiya Ogawaa, Kiyoto Shin-muraa, Yu Otania, Eiki Niwac, Takuya Hashimotoc, Tsuyoshi Hoshinod, and Kazuya Sasakia,b,e* aCourse of Mechanical Engineering, Graduate School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259 1292, Japan bDepartment of Prime Mover Engineering, School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259 1292, Japan cDepartment of Physics, College of Humanities and Sciences, Nihon University, 3-8-1 Sakurajousui, Setagaya-ku, Tokyo 156 8550, Japan dBreeding Functional Materials Development Group, Department of Blanket Systems Research, Rokkasho Fusion Institute, Sector of Fusion Research and Development, Japan Atomic Energy Agency, 2-166 Obuchi, Omotedate, Rokkasho-mura, Kamikita-gun, Aomori, 039 3212, Japan eGraduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori, 036 8561, Japan * Corresponding Author: k_sasaki@hirosaki-u.ac.jp
Funding Information:
ACKNOWLEDGEMENTS This report was prepared within the framework of the Agreement between the Government of Japan and the European Atomic Energy Community for The Joint Implementation of The Broader Approach Activities in the Field of Fusion Energy Research. The authors would like to thank all the contributors to IFERC projects in Japan and also all the members of the IFERC Project Team.
Publisher Copyright:
© 2017 by The American Ceramic Society.
PY - 2017
Y1 - 2017
N2 - Ceramic breeders used in a fusion reactor blanket, which play a role in the production of tritium by the reaction with neutron, are required to have high lithium density in the pebble. Li5AlO4 contains lithium by high concentration and have a great ability of tritium breeder. However, in order to prepare the high purity powder of Li5AlO4, only a few methods with disadvantageous economically because of their requirement of a high-cost powder, Li2O. In this study, Li2CO3 powder was used instead of Li2O powder, which are not always commercially available, and a high-purity powder of -Li5AlO4 and -Li5AlO4 were synthesized via a solid state reaction. Mixed powders of Li2CO3 and Al2O3 with a molar ratio of 5:1 were fired at 630°C and/or 800°C in H2 and/or O2 for several hours. This low firing temperature inhibited the vaporization of lithium during the heating, so that the excess amount of lithium compounds was not necessary. A reaction process that -LiAlO2, -LiAlO2, and Li2O are produced as intermediate phases has been suggested.
AB - Ceramic breeders used in a fusion reactor blanket, which play a role in the production of tritium by the reaction with neutron, are required to have high lithium density in the pebble. Li5AlO4 contains lithium by high concentration and have a great ability of tritium breeder. However, in order to prepare the high purity powder of Li5AlO4, only a few methods with disadvantageous economically because of their requirement of a high-cost powder, Li2O. In this study, Li2CO3 powder was used instead of Li2O powder, which are not always commercially available, and a high-purity powder of -Li5AlO4 and -Li5AlO4 were synthesized via a solid state reaction. Mixed powders of Li2CO3 and Al2O3 with a molar ratio of 5:1 were fired at 630°C and/or 800°C in H2 and/or O2 for several hours. This low firing temperature inhibited the vaporization of lithium during the heating, so that the excess amount of lithium compounds was not necessary. A reaction process that -LiAlO2, -LiAlO2, and Li2O are produced as intermediate phases has been suggested.
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U2 - 10.1002/9781119321774.ch6
DO - 10.1002/9781119321774.ch6
M3 - Conference contribution
AN - SCOPUS:85044301583
SN - 9781119040439
T3 - Ceramic Engineering and Science Proceedings
SP - 49
EP - 60
BT - Ceramic Materials for Energy Applications VI - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
A2 - Matyas, Josef
A2 - Lin, Hua-Tay
A2 - Katoh, Yutai
A2 - Vomiero, Alberto
PB - American Ceramic Society
T2 - Ceramic Materials for Energy Applications VI - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
Y2 - 24 January 2016 through 29 January 2016
ER -