| 离子交换蒙脱石的热稳定性研究 |
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| 引用本文： | 何宏平,谢先德,郭九皋.离子交换蒙脱石的热稳定性研究[J].矿物岩石,2000,20(1):1-3. |
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| 作者姓名： | 何宏平 谢先德 郭九皋 |
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| 作者单位： | 中国科学院广州地球化学研究所,广州,510640 |
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| 基金项目： | 广东省自然科学基金(970570)和国家自然科学基金(49602024)资助项目 |
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| 摘 要： | 经Ａ１＾３＋，Ｃｒ＾３＋，Ｐｂ＾２＋等１２种不同金属离子交换的Ｃａ基蒙脱石的差热（ＤＴＡ）和热重（ＴＧ）分析表明，其第一吸热峰区的峰形和失重量发生了明显的变化，第二吸热峰的脱羟终止温度普遍下降；其放热峰的峰值温度和强度也发生了变化，经Ｐｂ＾２＿，Ｋ＋，Ｂａ＋等离子交换的蒙脱石的放热峰基本消失。金属离子的电子构型对蒙脱石层间阳离子配体水的脱失温度有显著影响。
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| 关 键 词： | 蒙脱石 金属离子 热学性质 离子交换 热稳定性 |
| 文章编号： | 1001-6872(2000)01-0001-03 |
| 修稿时间： | 1999－10－18 |
THERMAL STABILITY OF CATION EXCHANGED MONTMORILLONITE |
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| HE Hong-ping,XIE Xian-de,GUO Jiu-gao.THERMAL STABILITY OF CATION EXCHANGED MONTMORILLONITE[J].Journal of Mineralogy and Petrology,2000,20(1):1-3. |
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| Authors: | HE Hong-ping XIE Xian-de GUO Jiu-gao |
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| Institution: | HE Hong-ping ,XIE Xian-de ,GUO
Jiu-gao ;
(Guang-zhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640) |
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| Abstract: | The Differential Thermal Analysis (DTA) and Thermal Gravity (TG) study of montmorillonite exchanged by 12 kinds of metal ions, such as Al 3 ,Cr 3 ,Pb 2 , etc, show that the configuration and amount of weight losing of the first peak of heat absorption change obviously and the end temperature of structural water losing commonly decreases. Their center temperature and strength of the peak of releasing heat is different from the original sample. In the DTA curves of the montmorillonites exchanged by Pb 2 ,K ,Na , the peak of releasing heat disappears. It is suggested that the electronic structure of metal ions have an important effect on the temperature of losing ligand water of metal ions in the interlayer of montmorillonite. |
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| Keywords: | montmorillonite metal Ions thermal property electronic structure |
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