2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
2021 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 15 - Sep 19, 2021Online
[R2-08]High-temperature single-crystal X-ray diffraction study of Cs-exchanged chabazite: a crystallographic study on dehydration behavior[Presentation award entry]
*Naomi Kawata1,2, Keiko Fujiwara1, Makio Ohkawa3, Akihiko Nakatsuka1(1. Yamaguchi Univ. Sci. Tech. Innov., 2. Hiroshima Univ. N-BARD, 3. Hiroshima Univ. Sci. Eng.)
Keywords:
zeolite,chabazite,high-temperature single-crystal X-ray diffraction,dehydration,ion exchange
To research a key factor of an excellent ability of chabazite as ion-exchangers, we conducted the high-temperature single-crystal X-ray diffraction study of a Cs-exchanged chabazite. Our previous study reported that the occupancies of the exchangeable cations in non-exchanged chabazite changed drastically with their migration. However, in the present study, the occupancy of Cs site in the Cs-exchanged chabazite almost unchanged with heating, indicating that Cs+ strongly prefers a specific cation site in contrast to other exchangeable-cations such as Ca2+.