Dehydration and Rehydration of Magadiite and Kenyaite
Dehydration and Rehydration of Magadiite and Kenyaite
复制标题
麦加迪石和肯尼亚石的脱水和再水化
DOI：
10.2109/jcersj.100.738
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发表时间：
1992
影响因子：
1.1
通讯作者：
R. Otsuka
中科院分区：
文献类型：
--
作者：
K. Kosuge;A. Yamazaki;A. Tsunashima;R. Otsuka
研究了合成麦羟硅钠石和水羟硅钠石在R。T.至1000°C，并且还在R. T.麦羟硅钠石和水羟硅钠石在R. T.- 600°C时，基间距减小。在80°C-100°C下，观察到两种化合物的脱水“中间”步骤，其中麦羟硅钠石的基线间距为14.1A，水羟硅钠石的基线间距为18.8A。在加热至250°C后完全发生可逆再水化。层状结构在550°C下对于麦羟硅钠石分解，在600°C下对于水羟硅钠石分解。在高真空、10 ~（-5）Torr、R. T.然而，当“塌陷”产物在大气中保持24小时时，观察到可逆的再水化。
Dehydration and rehydration characteristics of synthetic magadiite and kenyaite were investigated in a 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 accompanying the decrease of basal spacing. At 80°C-100°C, the “intermediate” step of dehydration was observed for both compounds with the basal spacing of 14.1A for magadiite and 18.8A 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 24h at R. T. However, the reversible rehydration was observed, when the “collapsed” products were kept in atmospheric air for 24h.