The study of the dehydration and dehydroxylation of smectites by emanation thermal analysis

被引：49
|
作者：
Malek, Z [1 ]
Balek, V [1 ]
GarfinkelShweky, D [1 ]
Yariv, S [1 ]
机构：
[1] HEBREW UNIV JERUSALEM,DEPT INORGAN & ANALYT CHEM,IL-91904 JERUSALEM,ISRAEL
来源：
JOURNAL OF THERMAL ANALYSIS | 1997年 / 48卷 / 01期
关键词：
DTA; ETA; smectite clay minerals; TG; X-ray;
D O I：
10.1007/BF01978968
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The dehydration and dehydroxylation of the smectites, beidellite and montmorillonite (dioctahedral) and saponite and laponite (trioctahedral), were investigated by ETA, DTA, TG and Xray diffractions. There are differences between the behaviors of di- and trioctahedral clays which are due to the differences in the ability of the exchangeable cations to migrate into hexagonal holes of the SiO4 network and due to the fact that the dehydroxylation and recrystallization of dehydroxylated trioctahedral smectites occur simultaneously, whereas there is a temperature gap of about 300 degrees C between the dehydroxylation and the recrystallization of dioctahedral smectites.
引用
收藏
页码：83 / 92
页数：10
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