摘要
层电荷的大小是蒙脱石矿物最重要的参数,决定了其性质、加工方法以及应用。本文系统介绍了国内外对蒙脱石层电荷测定方法的研究现状,详细阐述了烷基铵法、结构式推算法、阳离子交换容量法、亚甲基蓝法测定层电荷的原理以及测试程序,分析了不同测试方法的优缺点。指出在选择层电荷的测定方法时,应综合考虑样品的纯度、杂质的性质、颗粒的大小,以及对精确性和快速性的要求等因素。
Layer charge is the main parameter of montmorillonite,it determines the properties,processing methods and applications of montmorillonite.In this paper,the research status quo of the methods for determination of layer charge density were presented;the theories and measurement procedure of alkylammonium method,structural formulae method,cation exchange capacity method and methylene blue method were introduced in detail; advantages and disadvantages of each method were compared.It was presented that on the choosing of measurement methods,several factors should be considered,such as the purity and particle size of samples,the properties of impurities,and the requirements for accuracy and speediness.
基金
国家自然科学基金(50774050)
关键词
无机非金属材料
蒙脱石
层电荷密度
烷基铵法
结构式推算法
阳离子交换容量法
亚甲基蓝法
inorganic non-metallic material
montmorillonite
layer charge
alkylammonium method
structural formulae method
cation exchange capacity method
methylene blue method
