Dehydration and rehydration of magadiite and kenyaite

Katsunori Kosuge, Atsushi Yamazaki, Atsumu Tsunashima, Ryohei Otsuka

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Dehydration and rehydration characteristics of synthetic magadiite and kenyaite were investigated in the temperature range from R.T. to 1000°C, and also under high vacuum at R.T. Magadiite and kenyaite lost interlayered water in the range of R.T.-600°C accompanied by a decrease in basal spacing. At 80°C-100°C, the 'intermediate' step of dehydration was observed for both compounds with a basal spacing of 14.1 angstrom for magadiite and 18.8 angstrom for kenyaite. Reversible rehydration took place completely after heating up to 250°C. The layered structures decomposed at 550°C for magadiite and at 600°C for kenyaite. Under high vacuum, interlayered water of both compounds was eliminated completely from the interlayer space at 10-5 Torr for 24 h at R.T. However, reversible rehydration was observed, when the 'collapsed' products were kept in atmospheric air for 24 h.

Original languageEnglish
Pages (from-to)738-742
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume100
Issue number1161
Publication statusPublished - 1992 May
Externally publishedYes

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high vacuum
Dehydration
dehydration
spacing
Vacuum
Water
water
interlayers
Heating
heating
air
products
Air
Temperature
temperature

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Dehydration and rehydration of magadiite and kenyaite. / Kosuge, Katsunori; Yamazaki, Atsushi; Tsunashima, Atsumu; Otsuka, Ryohei.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 100, No. 1161, 05.1992, p. 738-742.

Research output: Contribution to journalArticle

Kosuge, Katsunori ; Yamazaki, Atsushi ; Tsunashima, Atsumu ; Otsuka, Ryohei. / Dehydration and rehydration of magadiite and kenyaite. In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan. 1992 ; Vol. 100, No. 1161. pp. 738-742.
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