基于X射线衍射评价高岭石结构有序度Evaluation of the structure order of kaolinite using the X-ray diffraction
张证;肖雪;李艳;谢金丽;谭道永;
摘要(Abstract)：
对采自江苏、福建、江西、云南、广西等地7个高岭石样品进行X射线衍射分析，并利用Hinckley指数（HI）、随机缺陷密度(R_2)、八面体C位空隙含量（W_C）、Aparicio-Galan-Ferrell指数（AGFI）对高岭石样品的结构有序度进行综合评价。HI是经验参数，仅能定性的反映高岭石的结构有序度，且不适用低结构有序度高岭石。AGFI容易受到杂质矿物的影响，且分峰处理过程容易引进操作者主观误差，最终影响高岭石结构有序度的准确判断。R_2和W_C是从晶体结构上反应高岭石的结构有序度，且在计算上受杂质矿物和操作者主观影响较小。R_2指数仅适用于结构有序度较高的高岭石，而八面体C位空隙含量对于高结构有序度和低结构有序度的高岭石均适用，是一种准确性高且操作简单的评判高岭石结构有序度的方法。
关键词(KeyWords)： 高岭石;结构有序度;随机缺陷密度;八面体C位空隙含量
基金项目(Foundation): 四川省国际科技创新合作/港澳台科技创新合作项目（编号：2021YFH0058）
作者(Authors): 张证;肖雪;李艳;谢金丽;谭道永;
DOI: 10.16461/j.cnki.1000-4734.2022.42.096
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