几种蒙脱石层电荷密度的测试方法原理及其对比

Layer charge is the main parameter of montmorillonite, it determines the properties, processing methods and applications. In this paper, the research status quo of the methods for determination of layer charge density are presented; the theories and measurement procedure of alkylammonium method, structural formulae method, cation exchange capacity method and methylene blue method are introduced in detail; advantages and disadvantages of each methods are compared. It was presented that on the choosing of measurement methods, several factors incluing the purity and particle size of samples, the properties of impurities, and the requirements for accuracy and speedliness.