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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

柱撑蒙脱石的微结构变化研究

吴平霄; 张惠芬; 郭九皋; 王辅亚; 刘小勇+   

  1. 中国科学院广州地球化学研究所; 广州 510640; +南京大学固体微结构物理国家重点实验室; 南京 210093

  • 收稿日期:1998-03-02 修回日期:1998-04-02 出版日期:1999-02-20 网络出版日期:1999-02-20

Microstructure of Hydroxy-Al Pillared Montmorillonite

WU Ping-Xia; ZHANG Hut-Fen; GUO Jiu-GaO; WANG Fu-Ya; LIU Xian-Yong+   

  1. Guangzhou Institute of Geochemistry; Chinese Academy of Sciences Guangzhou 510640 China;+State key Laboratory of solid microstructure physics; Nanjing University Nanjing 210093 China
  • Received:1998-03-02 Revised:1998-04-02 Published:1999-02-20 Online:1999-02-20

PDF (PC)

1207

被引次数

166

摘要： 制备了柱撑蒙脱石，并运用27Al核磁共振谱等技术对柱化溶液中的Al的状态进行了研究，运用X射线定向衍射技术、红外光谱、差热、热重分析及原子力显微镜等技术对往化粘土中Keggi结构的作用及热稳定性进行了研究.结果表明，AlCl3溶液在［OH－］／［Al3+］＝2．4时水解生成的Kegin离子最多.柱撑蒙脱石层间距在自然状态下为2．53um，300℃灼烧后层间距稳定在1．83um，具有较好的热稳定性．

关键词: 柱撑蒙脱石, Keggin结构, 稳定性

Abstract: The pillared montmorillonite was prepared by Al3+ in Keggin ions which has Keggin structure.27Al NMR was used to monitor the environment of Al3+ in solution. The thermal stability ofpillared clays was determined by XRD, IR, DTA, TG and AFM. The results suggest when m=2.4 the quantity of Keggin ions in AlCl3 solution is more. In natural state, the d(001) value of pillaredmontmorillonite is 2.53urn, after calcined at 300℃, the hasal interlayer spacing is stabilized 1.83um,with high stability.

Key words: pillared montmorillonite, keggin structure, stability

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