| 量热研究铝与钠蒙脱土交换反应 |
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| 引用本文： | 潘竟军,杨冠英,赵扬,韩布兴,闫海科.量热研究铝与钠蒙脱土交换反应[J].物理化学学报,1998,14(6):569-572. |
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| 作者姓名： | 潘竟军 杨冠英 赵扬 韩布兴 闫海科 |
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| 作者单位： | Institute of Chemistry,Chinese Academy of Science,Beijing 100080 |
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| 摘 要： |
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| 关 键 词： | 铝 蒙脱土 交换焓 滴定量热法 X-射线衍射 |
| 收稿时间： | 1997-09-26 |
| 修稿时间： | 1998-01-26 |
Calorimetric Investigation for Exchange Reaction of Aluminum with Na-montmorillonite |
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| Pan Jing-Jun,Yang Guan-Ying,Zhao Yang,Han Bu-Xing,Yan Hai-Ke.Calorimetric Investigation for Exchange Reaction of Aluminum with Na-montmorillonite[J].Acta Physico-Chimica Sinica,1998,14(6):569-572. |
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| Authors: | Pan Jing-Jun Yang Guan-Ying Zhao Yang Han Bu-Xing Yan Hai-Ke |
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| Institution: | Institute of Chemistry,Chinese Academy of Science,Beijing 100080 |
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| Abstract: | Exchange enthalpies of aluminum with Na-montmorillonite suspension are determined at 3O3.15K and PH=3, and 4, using titration calorimetry and the exchange reaction mechanism are further studied by combining calorimetric results and exchange isotherm determined by static method. The adsorption of aluminum on Na-montmorillonite is endothermic, and therefore exchange reaction is a process driven by entropy. X-ray diffraction patterns of montmorillonite saturated by Na+ and Al3+ are determined at wet and dry state respectively. The results show Al3+ adsorbed on the clay can dramatically reduce the expansion of montmorillonite because Al3+prevents osmotic swelling. |
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| Keywords: | Aluminum Montmorillonite Exchange enthalpy Titration calorimetry X-ray diffraction |
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