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摘要
The pillared montmorillonite was prepared by Al 3+ in ions with Keggin sructure. 27Al NMR was used to monitor the environment of Al 3+ in solution. The thermal stability of pillared clays was determined by XRD,IR,DTA,TG and AFM. The results show that it will get the maximum quantity of Keggin ions in AlCl 3 solution when /=2.4. The d (001) value of pillared montmorillonite is 2.53 nm in a natural state,and the basal interlayer spacing is stabilized at 1.83 nm after incandescing at 300℃,w...
- 出版日期2003-7
- 单位华南理工大学
