| 羟基铁铝柱撑蒙脱石Keggin结构的稳定性 |
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| 引用本文： | 吴平霄,张惠芬,郭九皋,王辅亚.羟基铁铝柱撑蒙脱石Keggin结构的稳定性[J].矿物学报,1999,19(2):132-138. |
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| 作者姓名： | 吴平霄 张惠芬 郭九皋 王辅亚 |
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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： | 国家自然科学基金!49472089，广东省自然科学基金!940732 |
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| 摘 要： | 本文利用Ｋｅｇｇｉｎ结构可以发生类质同象置的性质，制备了含过渡金属离子Ｆｅ的羟基铁铝撑蒙脱石。
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| 关 键 词： | 羟基铁铝 柱撑蒙脱石 Keggin结构 稳定性 |
The Stability of Keggin Structure in Hydroxy-Fe-Al Pillared Montmorillonite |
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| Wu Pingxiao,Zhang Huifen,Guo Jiugao,Wang Fuya.The Stability of Keggin Structure in Hydroxy-Fe-Al Pillared Montmorillonite[J].Acta Mineralogica Sinica,1999,19(2):132-138. |
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| Authors: | Wu Pingxiao Zhang Huifen Guo Jiugao Wang Fuya |
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| Institution: | Guangzhou Institute of Geochemistry. Chinese Academy of Sciences. Guangzhou 510640 |
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| Abstract: | The pillared montmorillonite containing Fe3+ ion was prepared by substitutop Fe3+ for;Al3+ in Keggin ions which has Keggin structure. 27Al NMR and UV spectroscopy were used to;monitor the environment of Fe3+ and Al3+ in solution. The thermal stability of pillared clays was;determined by XRD, IR and EPR. The results suggest that the structure of hydroxy-Fe-Al oligo;cation, d001 values and the thermal stability of pillared clay are affected by the Fe/Al ratio in pilIared solution. The d001 values increase and the thermal stability decrease with increasing Fe/Al ratio. Excessive amounts of Fe3+ ions can destroy the Keggin structure. The existence of Keggin;structure can improve the thermal stability of the pillared clays. |
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| Keywords: | hydroxy-Fe-Al pillared montmorillonite Keggin structure stability |
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