水滑石的制备、表征及其在酯交换反应中的应用

摘要

Hydrotalcites have been prepared and characterized.Their crystalline structure are resemble. When the temprature reached 200～450 ℃,it will lose all its anions situated in the interlayer space. Because its surface alkali active centres, it can be used as ester-interchange reaction catalyst.The yield was over 98.5%.%制备了水滑石Mg6Al2(OH)16CO3*4H2O和Mg4Al2(OH)12(NO3)2*4H2O,它们的晶体结构基本相似,200～400 ℃时将失去全部层间阴离子。其表面带有碱性活性中心,可以作酯交换反应的催化剂,使用该催化剂反应产率达98.5%以上。