TY - JOUR
T1 - Dehydration and rehydration of magadiite and kenyaite
AU - Kosuge, Katsunori
AU - Yamazaki, Atsushi
AU - Tsunashima, Atsumu
AU - Otsuka, Ryohei
PY - 1992
Y1 - 1992
N2 - 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.
AB - 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.
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U2 - 10.2109/jcersj.100.738
DO - 10.2109/jcersj.100.738
M3 - Article
AN - SCOPUS:0026862167
VL - 100
SP - 738
EP - 742
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 1161
ER -