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中文摘要：
首先研究了大同高岭石的矿物学特征，结果表明大同高岭石晶粒粗大，主要由高岭石组成，样品的有序度高，Hinckley指数为1．12。在此基础上，用二甲基亚砜对大同高岭石进行插层，采用XRD、IR和TG—DSC研究插层复合物的结构。XRD结果表明DM—S0已插入高岭石层间，d001由原来的0．717nm增至1．13nm，插层率达96．01％；红外光谱证明DMSO中的S—O基团与高岭石的外羟基发生了化学键合作用；热分析结果显示插层复合物于120℃～240℃发生DMSO的脱嵌作用，高岭石的脱羟基温度在400℃～750℃。
英文摘要：
This paper studied the mineralogical characteristics of kaolinite from Datong firstly. It is shown that the main component is kaolinite with a high （HI= 1.12） degree of order. Kaolinite- DMSO intercalation composite was synthesized and characterized with XRD, IR and TG-DSC. The XRD pattern showed that DMSO can directly insert into the inter layer of kaolinite, d001 of the composite increased from 0. 717 nm to 1.13 nm and the intercalation rate reached 96.01%. IR spectra suggested that DMSO formed hydrogen bonds with the inner surface hydroxyles of kaolin- ite. The TG-DSC analysis revealed that.DMSO deintercalated from the interlayer of kaolinite at 120 ℃ -240 ℃ and the dehydroxylation of kaolinite reacted during 400 ℃-750℃.
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