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中文摘要：
采用超声波技术对钙基蒙脱土进行了钠化处理，考察了超声波作用时间、钠化剂的种类及其用量、老化温度等因素对钠化效率的影响，并用XRD进行了表征。实验得到的最优化的钠化条件是：选用NaCl作为钠化剂，且NaCl和蒙脱土的比例为0．06g／g，超声波作用30min，在70℃下老化2h，即可制得阳离子交换容量（CEC）达到269mmol／100g的钠基蒙脱土。与传统方法相比，超声波法的钠化时间短、效率高，并大大提高了CEC。
英文摘要：
A new method for preparing Na-montmonillonite by ultrasonic technology was studied. The effect of the factors on the efficiency of modification of calcium montmonillonite into sodium mont- monillonite was examined. The results show that the best conditions for preparing Na-montmonillonite are as following： the conversion agent is NaCl and its ratio with montmonillonite is 6% ; ultrasonic irradiation time is 30 min and conversion time is 2 h under 70 ℃. X- ray diffraction shows that the as - prepared samples are Na-montmonillonite and its CEC is 269 mmol/100g. Compared with the traditional method of preparing Na-montmonillonite, the new method had many advantages, for example, the short conversion time, high efficiency and CEC.
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