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用 DTA,TG-DTA,XRD 和 TPD-GC 系统地研究了一组离子交换蒙脱石的脱水过程,其中 TPD-GC 首次被用于这种研究工作中,我们的实验结果表明,蒙脱石中吸附水的状态和数量明显地依赖于可交换金属离子的水合能力和数量,而且只可能有一种吸附水.后者不同于广为接受的推断:蒙脱石中存要两种结合力明显不同的吸附水.
A series of ion exchange montmorillonite dehydration processes were systematically investigated by DTA, TG-DTA, XRD and TPD-GC. TPD-GC was firstly used in this research. Our experimental results show that the montmorillonite The state and amount of adsorbed water in the adsorbent depends significantly on the hydration capacity and amount of exchangeable metal ions and there may be only one species of adsorbed water, the latter being different from the widely accepted inference that there is significant binding between the two montmorillonites Different adsorbed water.