Synthesis of high purity li5ALO4 powder by solid state reaction under the H2 firing

Seiya Ogawa, Kiyoto Shin-Mura, Yu Otani, Eiki Niwa, Takuya Hashimoto, Tsuyoshi Hoshino, Kazuya Sasaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Title of host publicationCeramic Materials for Energy Applications VI - A Collection of Papers Presented at the 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
EditorsJosef Matyas, Hua-Tay Lin, Yutai Katoh, Alberto Vomiero
PublisherAmerican Ceramic Society
Pages49-60
Number of pages12
Edition6
ISBN (Print)9781119040439
DOIs
Publication statusPublished - 2017
Externally publishedYes
EventCeramic Materials for Energy Applications VI - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016 - Daytona Beach, United States
Duration: Jan 24 2016Jan 29 2016

Publication series

NameCeramic Engineering and Science Proceedings
Number6
Volume37
ISSN (Print)0196-6219

Conference

ConferenceCeramic Materials for Energy Applications VI - 40th International Conference on Advanced Ceramics and Composites, ICACC 2016
CountryUnited States
CityDaytona Beach
Period1/24/161/29/16

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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