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采用高温衍射仪研究了KCl 和NaCl.和在不同分子筛载体内孔和内表面的分散阈值.实验结果表明,分散阈值显著地与烘烤温度有关,烘烤温度愈高,分散阈值愈大.吸附水和固态离子交换反应也影响分散阈值大小.用盐类溶液浸渍分子筛在低温烘烤时的分散效果与高温加热盐类和分子筛干混样品的分散效果大不相同.例如,浸渍时KCl 在分子筛载体上分散很少,这主要归因于吸附水对KCl 的竞争吸附.
The high temperature diffractometer was used to study the dispersion thresholds of KCl and NaCl, and the pore and inner surface of different zeolites. The experimental results show that the dispersion threshold is significantly related to the baking temperature and the higher the baking temperature, the larger the dispersion threshold. Water and solid state ion exchange reaction also affect the dispersion threshold size.Dispersion effect of molecular sieve impregnated with salt solution at low temperature is very different from the dispersion effect of high temperature heated salt and molecular sieve dry mixed sample.For example, The dispersion on the carrier is very small, mainly due to the competitive adsorption of KCl by adsorbed water.